diff --git a/Driver.cpp b/Driver.cpp
index 76df8dd8..e3a97d1d 100644
--- a/Driver.cpp
+++ b/Driver.cpp
@@ -868,53 +868,15 @@ TCommandType TController::TableUpdate(double &fVelDes, double &fDist, double &fN
                         // jeśli długość peronu ((sSpeedTable[i].evEvent->ValueGet(2)) nie podana,
                         // przyjąć odległość fMinProximityDist
                         { // jeśli się zatrzymał przy W4, albo stał w momencie zobaczenia W4
-                            if (!AIControllFlag) // AI tylko sobie otwiera drzwi
-                                iDrivigFlags &= ~moveStopCloser; // w razie przełączenia na AI ma
-                            // nie podciągać do W4, gdy
-                            // użytkownik zatrzymał za daleko
-                            if ((iDrivigFlags & moveDoorOpened) == 0)
-                            { // drzwi otwierać jednorazowo
+                            if( !AIControllFlag ) {
+                                // w razie przełączenia na AI ma nie podciągać do W4, gdy użytkownik zatrzymał za daleko
+                                iDrivigFlags &= ~moveStopCloser;
+                            }
+                            
+                            if( ( iDrivigFlags & moveDoorOpened ) == 0 ) {
+                                // drzwi otwierać jednorazowo
                                 iDrivigFlags |= moveDoorOpened; // nie wykonywać drugi raz
-                                if (mvOccupied->DoorOpenCtrl == 1) //(mvOccupied->TrainType==dt_EZT)
-                                { // otwieranie drzwi w EZT
-                                    if (AIControllFlag) // tylko AI otwiera drzwi EZT, użytkownik
-                                        // musi samodzielnie
-                                        if (!mvOccupied->DoorLeftOpened &&
-                                            !mvOccupied->DoorRightOpened)
-                                        { // otwieranie drzwi
-                                            int p2 =
-                                                int(floor(sSpeedTable[i].evEvent->ValueGet(2))) %
-                                                10; // p7=platform side (1:left, 2:right, 3:both)
-                                            int lewe = (iDirection > 0) ? 1 : 2; // jeśli jedzie do tyłu, to drzwi otwiera odwrotnie
-                                            int prawe = (iDirection > 0) ? 2 : 1;
-                                            if (p2 & lewe)
-                                                mvOccupied->DoorLeft(true);
-                                            if (p2 & prawe)
-                                                mvOccupied->DoorRight(true);
-                                        }
-                                }
-                                else
-                                { // otwieranie drzwi w składach wagonowych - docelowo wysyłać komendę zezwolenia na otwarcie drzwi
-                                    int p7, lewe, prawe; // p7=platform side (1:left, 2:right, 3:both)
-                                    // tu będzie jeszcze długość peronu zaokrąglona do 10m
-                                    // (20m bezpieczniej, bo nie modyfikuje bitu 1)
-                                    p7 = int(std::floor(sSpeedTable[i].evEvent->ValueGet(2))) % 10;
-                                    TDynamicObject *p = pVehicles[0]; // pojazd na czole składu
-                                    while (p)
-                                    { // otwieranie drzwi w pojazdach - flaga zezwolenia była by lepsza
-                                        // jeśli jedzie do tyłu, to drzwi otwiera odwrotnie
-                                        lewe = (p->DirectionGet() > 0) ? 1 : 2;
-                                        prawe = 3 - lewe;
-                                        // wagony muszą mieć baterię załączoną do otwarcia drzwi...
-                                        p->MoverParameters->BatterySwitch(true);
-                                        if (p7 & lewe)
-                                            p->MoverParameters->DoorLeft(true);
-                                        if (p7 & prawe)
-                                            p->MoverParameters->DoorRight(true);
-                                        // pojazd podłączony z tyłu (patrząc od czoła)
-                                        p = p->Next();
-                                    }
-                                }
+                                Doors( true, static_cast<int>( std::floor( sSpeedTable[ i ].evEvent->ValueGet( 2 ) ) ) % 10 );
                             }
                             if (TrainParams->UpdateMTable( simulation::Time, asNextStop) ) {
                                 // to się wykona tylko raz po zatrzymaniu na W4
@@ -924,23 +886,9 @@ TCommandType TController::TableUpdate(double &fVelDes, double &fDist, double &fN
                                     iDrivigFlags &= ~( moveStartHorn | moveStartHornNow );
                                 }
                                 // perform loading/unloading
-                                auto const exchangetime { simulation::Station.update_load( pVehicles[ 0 ], *TrainParams ) };
-                                // TBD: adjust time to load exchange size
-                                if( fStopTime > -55 ) {
-                                    // na końcu rozkładu się ustawia 60s i tu by było skrócenie
-//                                    WaitingSet( 15.0 + Random( 15.0 ) ); // 10 sekund (wziąć z rozkładu????) - czekanie
-                                    // with door open on both sides calculated loading time is halved
-                                    // p7=platform side (1:left, 2:right, 3:both)
-                                    auto const platformside = static_cast<int>( std::floor( sSpeedTable[ i ].evEvent->ValueGet( 2 ) ) ) % 10;
-                                    WaitingSet(
-                                        platformside == 3 ?
-                                            exchangetime * 0.5 :
-                                            exchangetime );
-                                }
-                                // update brake settings and ai braking tables
-                                // NOTE: this calculation is run after completing loading/unloading
-                                // remember to move it to a more fitting spot, when loading/unloading taks some actual time
-                                AutoRewident(); // nastawianie hamulca do jazdy pociągowej
+                                auto const platformside = static_cast<int>( std::floor( sSpeedTable[ i ].evEvent->ValueGet( 2 ) ) ) % 10;
+                                auto const exchangetime = simulation::Station.update_load( pVehicles[ 0 ], *TrainParams, platformside );
+                                WaitingSet( std::max( -fStopTime, exchangetime ) ); // na końcu rozkładu się ustawia 60s i tu by było skrócenie
 
                                 if( TrainParams->CheckTrainLatency() < 0.0 ) {
                                     // odnotowano spóźnienie
@@ -1011,6 +959,10 @@ TCommandType TController::TableUpdate(double &fVelDes, double &fDist, double &fN
                                         + ": at " + std::to_string(simulation::Time.data().wHour) + ":" + std::to_string(simulation::Time.data().wMinute)
                                         + " next " + asNextStop); // informacja
 #endif
+                                    // update brake settings and ai braking tables
+                                    // NOTE: this calculation is expected to run after completing loading/unloading
+                                    AutoRewident(); // nastawianie hamulca do jazdy pociągowej
+
                                     if( int( floor( sSpeedTable[ i ].evEvent->ValueGet( 1 ) ) ) & 1 ) {
                                         // nie podjeżdżać do semafora, jeśli droga nie jest wolna
                                         iDrivigFlags |= moveStopHere;
@@ -2400,7 +2352,7 @@ bool TController::ReleaseEngine()
     ReactionTime = PrepareTime;
     if (AIControllFlag)
     { // jeśli steruje komputer
-        if (mvOccupied->DoorOpenCtrl == 1)
+        if (mvOccupied->DoorCloseCtrl == control::driver)
         { // zamykanie drzwi
             if (mvOccupied->DoorLeftOpened)
                 mvOccupied->DoorLeft(false);
@@ -3050,50 +3002,66 @@ void TController::SpeedSet()
     }
 };
 
-void TController::Doors(bool what)
-{ // otwieranie/zamykanie drzwi w składzie albo (tylko AI) EZT
-    if (what)
-    { // otwarcie
-    }
-    else
-    { // zamykanie
-        if (mvOccupied->DoorOpenCtrl == 1)
-        { // jeśli drzwi sterowane z kabiny
-            if( AIControllFlag ) {
-                if( mvOccupied->DoorLeftOpened || mvOccupied->DoorRightOpened ) {
-                    // AI zamyka drzwi przed odjazdem
-                    if( ( true == mvOccupied->DoorClosureWarning )
-                     && ( false == mvOccupied->DepartureSignal )
-                     && ( true == TestFlag( iDrivigFlags, moveDoorOpened ) ) ) {
-                        mvOccupied->signal_departure( true ); // załącenie bzyczka
-                        fActionTime = -3.0 - 0.1 * Random( 10 ); // 3-4 second wait
-                    }
-                    if( fActionTime > -0.5 ) {
-                    // Ra: trzeba by ustawić jakiś czas oczekiwania na zamknięcie się drzwi
-                        mvOccupied->DoorLeft( false ); // zamykanie drzwi
-                        mvOccupied->DoorRight( false );
-                        iDrivigFlags &= ~moveDoorOpened;
-                        // 1.5-2.5 sec wait, +potentially 0.5 remaining
-                        fActionTime = -1.5 - 0.1 * Random( 10 );
-                    }
+// otwieranie/zamykanie drzwi w składzie albo (tylko AI) EZT
+void TController::Doors( bool const Open, int const Side ) {
+
+    if( true == Open ) {
+        // otwieranie drzwi
+        // otwieranie drzwi w składach wagonowych - docelowo wysyłać komendę zezwolenia na otwarcie drzwi
+        // tu będzie jeszcze długość peronu zaokrąglona do 10m (20m bezpieczniej, bo nie modyfikuje bitu 1)
+        // p7=platform side (1:left, 2:right, 3:both)
+        auto *vehicle = pVehicles[0]; // pojazd na czole składu
+        while( vehicle != nullptr ) {
+            // wagony muszą mieć baterię załączoną do otwarcia drzwi...
+            vehicle->MoverParameters->BatterySwitch( true );
+            // otwieranie drzwi w pojazdach - flaga zezwolenia była by lepsza
+            if( vehicle->MoverParameters->DoorOpenCtrl != control::passenger ) {
+                // if the door are controlled by the driver, we let the user operate them...
+                if( true == AIControllFlag ) {
+                    // ...unless this user is an ai
+                    // p7=platform side (1:left, 2:right, 3:both)
+                    // jeśli jedzie do tyłu, to drzwi otwiera odwrotnie
+                    auto const lewe = ( vehicle->DirectionGet() > 0 ) ? 1 : 2;
+                    auto const prawe = 3 - lewe;
+                    if( Side & lewe )
+                        vehicle->MoverParameters->DoorLeft( true, range::local );
+                    if( Side & prawe )
+                        vehicle->MoverParameters->DoorRight( true, range::local );
                 }
             }
+            // pojazd podłączony z tyłu (patrząc od czoła)
+            vehicle = vehicle->Next();
         }
-        else
-        { // jeśli nie, to zamykanie w składzie wagonowym
-            TDynamicObject *p = pVehicles[0]; // pojazd na czole składu
-            while (p)
-            { // zamykanie drzwi w pojazdach - flaga zezwolenia była by lepsza
-                p->MoverParameters->DoorLeft(false); // w lokomotywie można by nie zamykać...
-                p->MoverParameters->DoorRight(false);
-                p = p->Next(); // pojazd podłączony z tyłu (patrząc od czoła)
+    }
+    else {
+        // zamykanie
+        if( AIControllFlag ) {
+            if( ( true == mvOccupied->DoorClosureWarning )
+             && ( false == mvOccupied->DepartureSignal )
+             && ( true == TestFlag( iDrivigFlags, moveDoorOpened ) ) ) {
+                mvOccupied->signal_departure( true ); // załącenie bzyczka
+                fActionTime = -3.0 - 0.1 * Random( 10 ); // 3-4 second wait
             }
-            // WaitingSet(5); //10 sekund tu to za długo, opóźnia odjazd o pół minuty
-            fActionTime = -3.0 - 0.1 * Random(10); // czekanie sekundę, może trochę dłużej
+        }
+
+        if( ( true == TestFlag( iDrivigFlags, moveDoorOpened ) )
+         && ( ( fActionTime > -0.5 )
+           || ( false == AIControllFlag ) ) ) {
+            // ai doesn't close the door until it's free to depart, but human driver has free reign to do stupid things
+            auto *vehicle = pVehicles[ 0 ]; // pojazd na czole składu
+            while( vehicle != nullptr ) {
+                // zamykanie drzwi w pojazdach - flaga zezwolenia była by lepsza
+                if( vehicle->MoverParameters->DoorCloseCtrl != control::passenger ) {
+                    vehicle->MoverParameters->DoorLeft( false, range::local ); // w lokomotywie można by nie zamykać...
+                    vehicle->MoverParameters->DoorRight( false, range::local );
+                }
+                vehicle = vehicle->Next(); // pojazd podłączony z tyłu (patrząc od czoła)
+            }
+            fActionTime = -2.5 - 0.1 * Random( 10 ); // 2.5-3.5 sec wait, +potentially 0.5 remaining
             iDrivigFlags &= ~moveDoorOpened; // zostały zamknięte - nie wykonywać drugi raz
         }
     }
-};
+}
 
 void TController::RecognizeCommand()
 { // odczytuje i wykonuje komendę przekazaną lokomotywie
@@ -3631,7 +3599,7 @@ TController::UpdateSituation(double dt) {
     // for human-controlled vehicles with no door control and dynamic brake auto-activating with door open
     if( ( false == AIControllFlag )
      && ( iDrivigFlags & moveDoorOpened )
-     && ( mvOccupied->DoorOpenCtrl != 1 )
+     && ( mvOccupied->DoorCloseCtrl != control::driver )
      && ( mvControlling->MainCtrlPos > 0 ) ) {
         Doors( false );
     }
@@ -4097,7 +4065,10 @@ TController::UpdateSituation(double dt) {
                         iDrivigFlags |= movePress; // następnie będzie dociskanie
                         DirectionForward(mvOccupied->ActiveDir < 0); // zmiana kierunku jazdy na przeciwny (dociskanie)
                         CheckVehicles(); // od razu zmienić światła (zgasić) - bez tego się nie odczepi
+/*
+                        // NOTE: disabled to prevent closing the door before passengers can disembark
                         fStopTime = 0.0; // nie ma na co czekać z odczepianiem
+*/
                     }
                 }
                 else {
@@ -4246,8 +4217,8 @@ TController::UpdateSituation(double dt) {
              && ( false == TestFlag( iDrivigFlags, movePress ) )
              && ( iCoupler == 0 )
 //             && ( mvOccupied->Vel > 0.0 )
-             && ( pVehicle->PrevConnected == nullptr )
-             && ( pVehicle->NextConnected == nullptr ) ) {
+             && ( pVehicle->MoverParameters->Couplers[ side::front ].CouplingFlag == coupling::faux )
+             && ( pVehicle->MoverParameters->Couplers[ side::rear ].CouplingFlag == coupling::faux ) ) {
                 SetVelocity(0, 0, stopJoin); // 1. faza odczepiania: zatrzymanie
                 // WriteLog("Zatrzymanie w celu odczepienia");
                 AccPreferred = std::min( 0.0, AccPreferred );
@@ -5039,7 +5010,7 @@ TController::UpdateSituation(double dt) {
                                 fMinProximityDist : // cars are allowed to move within min proximity distance
                                 fMaxProximityDist ) ? // other vehicle types keep wider margin
                                     true :
-                                    vel < VelNext ) ) {
+                                    ( vel + 1.0 ) < VelNext ) ) {
                             // to można przyspieszyć
                             IncSpeed();
                         }
diff --git a/Driver.h b/Driver.h
index f28c7a3a..6ddf0c22 100644
--- a/Driver.h
+++ b/Driver.h
@@ -303,7 +303,7 @@ private:
     bool IncSpeed();
     bool DecSpeed(bool force = false);
     void SpeedSet();
-    void Doors(bool what);
+    void Doors(bool const Open, int const Side = 0);
     void RecognizeCommand(); // odczytuje komende przekazana lokomotywie
     void Activation(); // umieszczenie obsady w odpowiednim członie
     void ControllingSet(); // znajduje człon do sterowania
diff --git a/DynObj.cpp b/DynObj.cpp
index 087e5a06..953fc8ba 100644
--- a/DynObj.cpp
+++ b/DynObj.cpp
@@ -1926,37 +1926,49 @@ TDynamicObject::Init(std::string Name, // nazwa pojazdu, np. "EU07-424"
             }
         } // koniec hamulce
         else if( ( ActPar.size() >= 3 )
-              && ( ActPar.substr( 0, 2 ) == "WF" ) ) {
-            // wheel flat
-            // TODO: convert this whole mess to something more elegant one day
-            ActPar.erase( 0, 2 );
+              && ( ActPar[ 0 ] == 'W' ) ) {
+            // wheel
+            ActPar.erase( 0, 1 );
+
             auto fixedflatsize { 0 };
-            {
-                // fixed size flat
-                auto const indexend { ActPar.find_first_not_of( "1234567890", 0 ) };
-                fixedflatsize = std::atoi( ActPar.substr( 0, indexend ).c_str() );
-                ActPar.erase( 0, indexend );
-            }
-            // optional parameters
             auto randomflatsize { 0 };
-            auto randomflatchance { 100 };
+            auto flatchance { 100 };
+
             while( false == ActPar.empty() ) {
-                if( ActPar[ 0 ] == 'R' ) {
-                    // random flat size
-                    auto const indexstart { 1 };
-                    auto const indexend { ActPar.find_first_not_of( "1234567890", indexstart ) };
-                    randomflatsize = std::atoi( ActPar.substr( indexstart, indexend ).c_str() );
-                    ActPar.erase( 0, indexend );
-                }
-                else if( ActPar[ 0 ] == 'P' ) {
-                    // random flat probability
-                    auto const indexstart { 1 };
-                    auto const indexend { ActPar.find_first_not_of( "1234567890", indexstart ) };
-                    randomflatchance = std::atoi( ActPar.substr( indexstart, indexend ).c_str() );
-                    ActPar.erase( 0, indexend );
+                // TODO: convert this whole copy and paste mess to something more elegant one day
+                switch( ActPar[ 0 ] ) {
+                    case 'F': {
+                        // fixed flat size
+                        auto const indexstart { 1 };
+                        auto const indexend { ActPar.find_first_not_of( "1234567890", indexstart ) };
+                        fixedflatsize = std::atoi( ActPar.substr( indexstart, indexend ).c_str() );
+                        ActPar.erase( 0, indexend );
+                        break;
+                    }
+                    case 'R': {
+                        // random flat size
+                        auto const indexstart { 1 };
+                        auto const indexend { ActPar.find_first_not_of( "1234567890", indexstart ) };
+                        randomflatsize = std::atoi( ActPar.substr( indexstart, indexend ).c_str() );
+                        ActPar.erase( 0, indexend );
+                        break;
+                    }
+                    case 'P': {
+                        // random flat probability
+                        auto const indexstart { 1 };
+                        auto const indexend { ActPar.find_first_not_of( "1234567890", indexstart ) };
+                        flatchance = std::atoi( ActPar.substr( indexstart, indexend ).c_str() );
+                        ActPar.erase( 0, indexend );
+                        break;
+                    }
+                    default: {
+                        // unrecognized key
+                        ActPar.erase( 0, 1 );
+                        break;
+                    }
                 }
             }
-            if( Random(0, 100) <= randomflatchance ) {
+            if( Random( 0, 100 ) <= flatchance ) {
                 MoverParameters->WheelFlat += fixedflatsize + Random( 0, randomflatsize );
             }
         }
@@ -2478,6 +2490,87 @@ bool TDynamicObject::UpdateForce(double dt, double dt1, bool FullVer)
     return true;
 }
 
+// initiates load change by specified amounts, with a platform on specified side
+void TDynamicObject::LoadExchange( int const Disembark, int const Embark, int const Platform ) {
+
+    if( ( MoverParameters->DoorOpenCtrl == control::passenger )
+     || ( MoverParameters->DoorOpenCtrl == control::mixed ) ) {
+        // jeśli jedzie do tyłu, to drzwi otwiera odwrotnie
+        auto const lewe = ( DirectionGet() > 0 ) ? 1 : 2;
+        auto const prawe = 3 - lewe;
+        if( Platform & lewe ) {
+            MoverParameters->DoorLeft( true, range::local );
+        }
+        if( Platform & prawe ) {
+            MoverParameters->DoorRight( true, range::local );
+        }
+    }
+    m_exchange.unload_count += Disembark;
+    m_exchange.load_count += Embark;
+    m_exchange.speed_factor = (
+        Platform == 3 ?
+            2.0 :
+            1.0 );
+    m_exchange.time = 0.0;
+}
+
+// update state of load exchange operation
+void TDynamicObject::update_exchange( double const Deltatime ) {
+
+    if( ( m_exchange.unload_count < 0.01 ) && ( m_exchange.load_count < 0.01 ) ) { return; }
+
+    if( ( MoverParameters->Vel < 2.0 )
+     && ( ( true == MoverParameters->DoorLeftOpened )
+       || ( true == MoverParameters->DoorRightOpened ) ) ) {
+
+        m_exchange.time += Deltatime;
+        while( ( m_exchange.unload_count > 0.01 )
+            && ( m_exchange.time >= 1.0 ) ) {
+            
+            m_exchange.time -= 1.0;
+            auto const exchangesize = std::min( m_exchange.unload_count, MoverParameters->UnLoadSpeed * m_exchange.speed_factor );
+            m_exchange.unload_count -= exchangesize;
+            MoverParameters->LoadStatus = 1;
+            MoverParameters->Load = std::max( 0.f, MoverParameters->Load - exchangesize );
+            update_load_visibility();
+        }
+        if( m_exchange.unload_count < 0.01 ) {
+            // finish any potential unloading operation before adding new load
+            // don't load more than can fit
+            m_exchange.load_count = std::min( m_exchange.load_count, MoverParameters->MaxLoad - MoverParameters->Load );
+            while( ( m_exchange.load_count > 0.01 )
+                && ( m_exchange.time >= 1.0 ) ) {
+
+                m_exchange.time -= 1.0;
+                auto const exchangesize = std::min( m_exchange.load_count, MoverParameters->LoadSpeed * m_exchange.speed_factor );
+                m_exchange.load_count -= exchangesize;
+                MoverParameters->LoadStatus = 2;
+                MoverParameters->Load = std::min( MoverParameters->MaxLoad, MoverParameters->Load + exchangesize ); // std::max not strictly needed but, eh
+                update_load_visibility();
+            }
+        }
+    }
+
+    if( MoverParameters->Vel > 2.0 ) {
+        // if the vehicle moves too fast cancel the exchange
+        m_exchange.unload_count = 0;
+        m_exchange.load_count = 0;
+    }
+
+    if( ( m_exchange.unload_count < 0.01 )
+     && ( m_exchange.load_count < 0.01 ) ) {
+
+        MoverParameters->LoadStatus = 0;
+        // if the exchange is completed (or canceled) close the door, if applicable
+        if( ( MoverParameters->DoorCloseCtrl == control::passenger )
+         || ( MoverParameters->DoorCloseCtrl == control::mixed ) ) {
+
+            MoverParameters->DoorLeft( false, range::local );
+            MoverParameters->DoorRight( false, range::local );
+        }
+    }
+}
+
 void TDynamicObject::LoadUpdate() {
     // przeładowanie modelu ładunku
     // Ra: nie próbujemy wczytywać modeli miliony razy podczas renderowania!!!
@@ -2496,7 +2589,11 @@ void TDynamicObject::LoadUpdate() {
             }
             if( mdLoad == nullptr ) {
                 // if this fails, try generic load model
-                mdLoad = TModelsManager::GetModel( asBaseDir + MoverParameters->LoadType, true );
+                auto const genericloadfilename { asBaseDir + MoverParameters->LoadType };
+                if( ( true == FileExists( genericloadfilename + ".e3d" ) )
+                 || ( true == FileExists( genericloadfilename + ".t3d" ) ) ) {
+                    mdLoad = TModelsManager::GetModel( genericloadfilename, true );
+                }
             }
             if( mdLoad != nullptr ) {
                 // TODO: discern from vehicle component which merely uses vehicle directory and has no animations, so it can be initialized outright
@@ -2541,11 +2638,11 @@ TDynamicObject::update_load_sections() {
 
 void
 TDynamicObject::update_load_visibility() {
-
+/*
     if( Random() < 0.25 ) {
         shuffle_load_sections();
     }
-
+*/
     auto loadpercentage { (
         MoverParameters->MaxLoad == 0.0 ?
             0.0 :
@@ -3523,6 +3620,8 @@ bool TDynamicObject::Update(double dt, double dt1)
         }
         MoverParameters->DerailReason = 0; //żeby tylko raz
     }
+
+    update_exchange( dt );
     if (MoverParameters->LoadStatus)
         LoadUpdate(); // zmiana modelu ładunku
 	
@@ -3563,6 +3662,7 @@ bool TDynamicObject::FastUpdate(double dt)
     // ResetdMoveLen();
     FastMove(dDOMoveLen);
 
+    update_exchange( dt );
     if (MoverParameters->LoadStatus)
         LoadUpdate(); // zmiana modelu ładunku
     return true; // Ra: chyba tak?
@@ -3759,6 +3859,19 @@ void TDynamicObject::RenderSounds() {
     }
 
     // other sounds
+    // load exchange
+    if( MoverParameters->LoadStatus & 1 ) {
+        m_exchangesounds.unloading.play( sound_flags::exclusive );
+    }
+    else {
+        m_exchangesounds.unloading.stop();
+    }
+    if( MoverParameters->LoadStatus & 2 ) {
+        m_exchangesounds.loading.play( sound_flags::exclusive );
+    }
+    else {
+        m_exchangesounds.loading.stop();
+    }
     // NBMX sygnal odjazdu
     if( MoverParameters->DoorClosureWarning ) {
         if( MoverParameters->DepartureSignal ) {
@@ -4880,6 +4993,16 @@ void TDynamicObject::LoadMMediaFile( std::string BaseDir, std::string TypeName,
                     }
                 }
 
+                else if( token == "unloading:" ) {
+                    m_exchangesounds.unloading.deserialize( parser, sound_type::single );
+                    m_exchangesounds.unloading.owner( this );
+                }
+
+                else if( token == "loading:" ) {
+                    m_exchangesounds.loading.deserialize( parser, sound_type::single );
+                    m_exchangesounds.loading.owner( this );
+                }
+
 				else if( token == "sand:" ) {
                     sSand.deserialize( parser, sound_type::multipart, sound_parameters::range );
                     sSand.owner( this );
diff --git a/DynObj.h b/DynObj.h
index 14610ca2..cac32e30 100644
--- a/DynObj.h
+++ b/DynObj.h
@@ -265,6 +265,13 @@ private:
 
 private:
 // types
+    struct exchange_data {
+        float unload_count { 0.f }; // amount to unload
+        float load_count { 0.f }; // amount to load
+        float speed_factor { 1.f }; // operation speed modifier
+        float time { 0.f }; // time spent on the operation
+    };
+
     struct coupler_sounds {
         sound_source dsbCouplerAttach { sound_placement::external }; // moved from cab
         sound_source dsbCouplerDetach { sound_placement::external }; // moved from cab
@@ -283,6 +290,11 @@ private:
         sound_source rsDoorClose { sound_placement::general, 25.f };
     };
 
+    struct exchange_sounds {
+        sound_source loading { sound_placement::general };
+        sound_source unloading { sound_placement::general };
+    };
+
     struct axle_sounds {
         double distance; // distance to rail joint
         double offset; // axle offset from centre of the vehicle
@@ -319,6 +331,8 @@ private:
     void ABuBogies();
     void ABuModelRoll();
     void TurnOff();
+    // update state of load exchange operation
+    void update_exchange( double const Deltatime );
 
 // members
     TButton btCoupler1; // sprzegi
@@ -386,6 +400,9 @@ private:
     sound_source rscurve { sound_placement::external, EU07_SOUND_RUNNINGNOISECUTOFFRANGE }; // youBy
     sound_source rsDerailment { sound_placement::external, 250.f }; // McZapkie-051202
 
+    exchange_data m_exchange; // state of active load exchange procedure, if any
+    exchange_sounds m_exchangesounds; // sounds associated with the load exchange
+
     Math3D::vector3 modelShake;
 
     bool renderme; // yB - czy renderowac
@@ -467,6 +484,8 @@ private:
     void create_controller( std::string const Type, bool const Trainset );
     void AttachPrev(TDynamicObject *Object, int iType = 1);
     bool UpdateForce(double dt, double dt1, bool FullVer);
+    // initiates load change by specified amounts, with a platform on specified side
+    void LoadExchange( int const Disembark, int const Embark, int const Platform );
     void LoadUpdate();
     void update_load_sections();
     void update_load_visibility();
@@ -554,6 +573,7 @@ private:
     void DestinationSet(std::string to, std::string numer);
     std::string TextureTest(std::string const &name);
     void OverheadTrack(float o);
+
     double MED[9][8]; // lista zmiennych do debugowania hamulca ED
     static std::string const MED_labels[ 8 ];
 };
diff --git a/EU07.cpp b/EU07.cpp
index 3ae98062..44079c3a 100644
--- a/EU07.cpp
+++ b/EU07.cpp
@@ -438,7 +438,6 @@ int main(int argc, char *argv[])
 		return -1;
 	}
 
-	TPythonInterpreter::killInstance();
 #ifdef _WIN32
     Console::Off(); // wyłączenie konsoli (komunikacji zwrotnej)
     SafeDelete( pConsole );
@@ -448,7 +447,8 @@ int main(int argc, char *argv[])
 	glfwDestroyWindow(window);
 	glfwTerminate();
 
-	_exit(0); // skip destructors, there are ordering errors which causes segfaults
+    TPythonInterpreter::killInstance();
 
+	_exit(0); // skip destructors, there are ordering errors which causes segfaults
 	return 0;
 }
diff --git a/Globals.h b/Globals.h
index 539e44c4..ad6471a6 100644
--- a/Globals.h
+++ b/Globals.h
@@ -118,6 +118,7 @@ struct global_settings {
     float SplineFidelity{ 1.f }; // determines segment size during conversion of splines to geometry
     bool ResourceSweep{ true }; // gfx resource garbage collection
     bool ResourceMove{ false }; // gfx resources are moved between cpu and gpu side instead of sending a copy
+    bool compress_tex{ true }; // all textures are compressed on gpu side
     std::string asSky{ "1" };
     bool bGlutFont{ false }; // czy tekst generowany przez GLUT32.DLL
     double fFpsAverage{ 20.0 }; // oczekiwana wartosć FPS
@@ -168,7 +169,6 @@ struct global_settings {
 	std::string screenshot_dir;
 	bool loading_log = true;
 	bool dds_upper_origin = false;
-	bool compress_tex = true;
 
 // methods
     void LoadIniFile( std::string asFileName );
diff --git a/McZapkie/MOVER.h b/McZapkie/MOVER.h
index c72285f9..709a9008 100644
--- a/McZapkie/MOVER.h
+++ b/McZapkie/MOVER.h
@@ -153,7 +153,8 @@ enum coupling {
     gangway = 0x10,
     mainhose = 0x20,
     heating = 0x40,
-    permanent = 0x80
+    permanent = 0x80,
+    uic = 0x100
 };
 // possible effect ranges for control commands; exclusive
 enum range {
@@ -176,6 +177,15 @@ enum light {
     redmarker_right = 0x20,
     rearendsignals = 0x40
 };
+
+// door operation methods; exclusive
+enum control {
+    passenger, // local, opened/closed for duration of loading
+    driver, // remote, operated by the driver
+    autonomous, // local, closed when vehicle moves and/or after timeout
+    conductor, // remote, operated by the conductor
+    mixed // primary manual but answers also to remote control
+};
 											/*typ hamulca elektrodynamicznego*/
 static int const dbrake_none = 0;
 static int const dbrake_passive = 1;
@@ -307,7 +317,7 @@ struct TCommand
 	std::string Command; /*komenda*/
 	double Value1 = 0.0; /*argumenty komendy*/
 	double Value2 = 0.0;
-    int Coupling{ ctrain_controll }; // coupler flag used to determine command propagation
+    int Coupling { coupling::control }; // coupler flag used to determine command propagation
     TLocation Location;
 };
 
@@ -821,10 +831,10 @@ public:
     static std::vector<std::string> const eimc_labels;
     double InverterFrequency { 0.0 }; // current frequency of power inverters
 	/*-dla wagonow*/
-    double MaxLoad = 0.0;           /*masa w T lub ilosc w sztukach - ladownosc*/
+    float MaxLoad = 0.f;           /*masa w T lub ilosc w sztukach - ladownosc*/
 	std::string LoadAccepted; std::string LoadQuantity; /*co moze byc zaladowane, jednostki miary*/
 	double OverLoadFactor = 0.0;       /*ile razy moze byc przekroczona ladownosc*/
-	double LoadSpeed = 0.0; double UnLoadSpeed = 0.0;/*szybkosc na- i rozladunku jednostki/s*/
+	float LoadSpeed = 0.f; float UnLoadSpeed = 0.f;/*szybkosc na- i rozladunku jednostki/s*/
 	int DoorOpenCtrl = 0; int DoorCloseCtrl = 0; /*0: przez pasazera, 1: przez maszyniste, 2: samoczynne (zamykanie)*/
 	double DoorStayOpen = 0.0;               /*jak dlugo otwarte w przypadku DoorCloseCtrl=2*/
 	bool DoorClosureWarning = false;      /*czy jest ostrzeganie przed zamknieciem*/
@@ -887,7 +897,7 @@ public:
     bool CompressorAllowLocal{ true }; // local device state override (most units don't have this fitted so it's set to true not to intefere)
     bool CompressorGovernorLock{ false }; // indicates whether compressor pressure switch was activated due to reaching cut-out pressure
     // TODO converter parameters, for when we start cleaning up mover parameters
-    start ConverterStart{ manual }; // whether converter is started manually, or by other means
+    start ConverterStart{ start::manual }; // whether converter is started manually, or by other means
     float ConverterStartDelay{ 0.0f }; // delay (in seconds) before the converter is started, once its activation conditions are met
     double ConverterStartDelayTimer{ 0.0 }; // helper, for tracking whether converter start delay passed
 	bool ConverterAllow = false;             /*zezwolenie na prace przetwornicy NBMX*/
@@ -1024,7 +1034,7 @@ public:
 	double eAngle = M_PI * 0.5;
 
 	/*-dla wagonow*/
-    double Load = 0.0;      /*masa w T lub ilosc w sztukach - zaladowane*/
+    float Load = 0.f;      /*masa w T lub ilosc w sztukach - zaladowane*/
 	std::string LoadType;   /*co jest zaladowane*/
 	int LoadStatus = 0; //+1=trwa rozladunek,+2=trwa zaladunek,+4=zakończono,0=zaktualizowany model
 	double LastLoadChangeTime = 0.0; //raz (roz)ładowania
@@ -1220,8 +1230,8 @@ public:
 
 	/* funckje dla wagonow*/
 	bool LoadingDone(double LSpeed, std::string LoadInit);
-	bool DoorLeft(bool State); //obsluga drzwi lewych
-	bool DoorRight(bool State); //obsluga drzwi prawych
+	bool DoorLeft(bool State, int const Notify = range::consist ); //obsluga drzwi lewych
+	bool DoorRight(bool State, int const Notify = range::consist ); //obsluga drzwi prawych
 	bool DoorBlockedFlag(void); //sprawdzenie blokady drzwi
     bool signal_departure( bool const State, int const Notify = range::consist ); // toggles departure warning
 
diff --git a/McZapkie/Mover.cpp b/McZapkie/Mover.cpp
index 7c5ef7d7..8f6e4a4f 100644
--- a/McZapkie/Mover.cpp
+++ b/McZapkie/Mover.cpp
@@ -6004,65 +6004,80 @@ bool TMoverParameters::DoorBlockedFlag(void)
 // Q: 20160713
 // Otwiera / zamyka lewe drzwi
 // *************************************************************************************************
-bool TMoverParameters::DoorLeft(bool State)
-{
-    bool DL = false;
-    if ((DoorLeftOpened != State) && (DoorBlockedFlag() == false) && (Battery == true))
-    {
-        DL = true;
-        DoorLeftOpened = State;
-        if (State == true)
-        {
-            if (CabNo > 0)
-                SendCtrlToNext("DoorOpen", 1, CabNo); // 1=lewe, 2=prawe
-            else
-                SendCtrlToNext("DoorOpen", 2, CabNo); // zamiana
-            CompressedVolume -= 0.003;
-        }
-        else
-        {
-            if (CabNo > 0)
-                SendCtrlToNext("DoorClose", 1, CabNo);
-            else
-                SendCtrlToNext("DoorClose", 2, CabNo);
-        }
+// NOTE: door methods work regardless of vehicle door control type,
+// but commands issued through the command system work only for vehicles which accept remote door control
+bool TMoverParameters::DoorLeft(bool State, int const Notify ) {
+
+    if( DoorLeftOpened == State ) {
+        // TBD: should the command be passed to other vehicles regardless of whether it affected the primary target?
+        // (for the time being no, methods are often invoked blindly which would lead to commands spam)
+        return false;
     }
-    else
-        DL = false;
-    return DL;
+
+    bool result { false };
+
+    if( ( Battery == true )
+     && ( DoorBlockedFlag() == false ) ) {
+
+        DoorLeftOpened = State;
+        result = true;
+    }
+    if( Notify != range::local ) {
+
+        SendCtrlToNext(
+            ( State == true ?
+                "DoorOpen" :
+                "DoorClose" ),
+            ( CabNo > 0 ? // 1=lewe, 2=prawe (swap if reversed)
+                1 :
+                2 ),
+            CabNo,
+            ( Notify == range::unit ?
+                coupling::control | coupling::permanent :
+                coupling::control ) );
+    }
+
+    return result;
 }
 
 // *************************************************************************************************
 // Q: 20160713
 // Otwiera / zamyka prawe drzwi
 // *************************************************************************************************
-bool TMoverParameters::DoorRight(bool State)
-{
-    bool DR = false;
-    if ((DoorRightOpened != State) && (DoorBlockedFlag() == false) && (Battery == true))
-    {
-        DR = true;
-        DoorRightOpened = State;
-        if (State == true)
-        {
-            if (CabNo > 0)
-                SendCtrlToNext("DoorOpen", 2, CabNo); // 1=lewe, 2=prawe
-            else
-                SendCtrlToNext("DoorOpen", 1, CabNo); // zamiana
-            CompressedVolume -= 0.003;
-        }
-        else
-        {
-            if (CabNo > 0)
-                SendCtrlToNext("DoorClose", 2, CabNo);
-            else
-                SendCtrlToNext("DoorClose", 1, CabNo);
-        }
-    }
-    else
-        DR = false;
+// NOTE: door methods work regardless of vehicle door control type,
+// but commands issued through the command system work only for vehicles which accept remote door control
+bool TMoverParameters::DoorRight(bool State, int const Notify ) {
 
-    return DR;
+    if( DoorRightOpened == State ) {
+        // TBD: should the command be passed to other vehicles regardless of whether it affected the primary target?
+        // (for the time being no, methods are often invoked blindly which would lead to commands spam)
+        return false;
+    }
+
+    bool result { false };
+
+    if( ( Battery == true )
+     && ( DoorBlockedFlag() == false ) ) {
+
+        DoorRightOpened = State;
+        result = true;
+    }
+    if( Notify != range::local ) {
+
+        SendCtrlToNext(
+            ( State == true ?
+                "DoorOpen" :
+                "DoorClose" ),
+            ( CabNo > 0 ? // 1=lewe, 2=prawe (swap if reversed)
+                2 :
+                1 ),
+            CabNo,
+            ( Notify == range::unit ?
+                coupling::control | coupling::permanent :
+                coupling::control ) );
+    }
+
+    return result;
 }
 
 // toggles departure warning
@@ -6084,8 +6099,8 @@ TMoverParameters::signal_departure( bool const State, int const Notify ) {
                 0 ),
             CabNo,
             ( Notify == range::unit ?
-                ctrain_controll | ctrain_depot :
-                ctrain_controll ) );
+                coupling::control | coupling::permanent :
+                coupling::control ) );
     }
 
     return true;
@@ -7183,8 +7198,8 @@ void TMoverParameters::LoadFIZ_Brake( std::string const &line ) {
         auto lookup = compressorpowers.find( extract_value( "CompressorPower", line ) );
         CompressorPower =
             lookup != compressorpowers.end() ?
-            lookup->second :
-            1;
+                lookup->second :
+                1;
     }
 
     if( true == extract_value( AirLeakRate, "AirLeakRate", line, "" ) ) {
@@ -7195,16 +7210,31 @@ void TMoverParameters::LoadFIZ_Brake( std::string const &line ) {
 
 void TMoverParameters::LoadFIZ_Doors( std::string const &line ) {
 
-    DoorOpenCtrl = 0;
-    std::string openctrl; extract_value( openctrl, "OpenCtrl", line, "" );
-    if( openctrl == "DriverCtrl" ) { DoorOpenCtrl = 1; }
-
-    DoorCloseCtrl = 0;
-    std::string closectrl; extract_value( closectrl, "CloseCtrl", line, "" );
-    if( closectrl == "DriverCtrl" ) { DoorCloseCtrl = 1; }
-    else if( closectrl == "AutomaticCtrl" ) { DoorCloseCtrl = 2; }
-
-    if( DoorCloseCtrl == 2 ) { extract_value( DoorStayOpen, "DoorStayOpen", line, "" ); }
+    std::map<std::string, int> doorcontrols {
+        { "Passenger", control::passenger },
+        { "AutomaticCtrl", control::autonomous },
+        { "DriverCtrl", control::driver },
+        { "Conductor", control::conductor },
+        { "Mixed", control::mixed }
+    };
+    // opening method
+    {
+        auto lookup = doorcontrols.find( extract_value( "OpenCtrl", line ) );
+        DoorOpenCtrl =
+            lookup != doorcontrols.end() ?
+                lookup->second :
+                control::passenger;
+    }
+    // closing method
+    {
+        auto lookup = doorcontrols.find( extract_value( "CloseCtrl", line ) );
+        DoorCloseCtrl =
+            lookup != doorcontrols.end() ?
+                lookup->second :
+                control::passenger;
+    }
+    // automatic closing timer
+    if( DoorCloseCtrl == control::autonomous ) { extract_value( DoorStayOpen, "DoorStayOpen", line, "" ); }
 
     extract_value( DoorOpenSpeed, "OpenSpeed", line, "" );
     extract_value( DoorCloseSpeed, "CloseSpeed", line, "" );
@@ -8314,6 +8344,7 @@ bool TMoverParameters::SendCtrlToNext( std::string const CtrlCommand, double con
         // musi być wybrana niezerowa kabina
         if( ( Couplers[ d ].Connected != nullptr )
          && ( TestFlag( Couplers[ d ].CouplingFlag, Couplertype ) ) ) {
+
             if( Couplers[ d ].ConnectedNr != d ) {
                 // jeśli ten nastpęny jest zgodny z aktualnym
                 if( Couplers[ d ].Connected->SetInternalCommand( CtrlCommand, ctrlvalue, dir, Couplertype ) )
@@ -8472,38 +8503,48 @@ bool TMoverParameters::RunCommand( std::string Command, double CValue1, double C
 	}
 	else if (Command == "DoorOpen") /*NBMX*/
 	{ // Ra: uwzględnić trzeba jeszcze zgodność sprzęgów
-		if ((CValue2 > 0))
-		{ // normalne ustawienie pojazdu
-			if ((CValue1 == 1) || (CValue1 == 3))
-				DoorLeftOpened = true;
-			if ((CValue1 == 2) || (CValue1 == 3))
-				DoorRightOpened = true;
-		}
-		else
-		{ // odwrotne ustawienie pojazdu
-			if ((CValue1 == 2) || (CValue1 == 3))
-				DoorLeftOpened = true;
-			if ((CValue1 == 1) || (CValue1 == 3))
-				DoorRightOpened = true;
-		}
+        if( ( DoorCloseCtrl == control::conductor )
+         || ( DoorCloseCtrl == control::driver ) 
+         || ( DoorCloseCtrl == control::mixed ) ) {
+            // ignore remote command if the door is only operated locally
+            if( CValue2 > 0 ) {
+                // normalne ustawienie pojazdu
+                if( ( CValue1 == 1 ) || ( CValue1 == 3 ) )
+                    DoorLeftOpened = true;
+                if( ( CValue1 == 2 ) || ( CValue1 == 3 ) )
+                    DoorRightOpened = true;
+            }
+            else {
+                // odwrotne ustawienie pojazdu
+                if( ( CValue1 == 2 ) || ( CValue1 == 3 ) )
+                    DoorLeftOpened = true;
+                if( ( CValue1 == 1 ) || ( CValue1 == 3 ) )
+                    DoorRightOpened = true;
+            }
+        }
         OK = SendCtrlToNext( Command, CValue1, CValue2, Couplertype );
 	}
 	else if (Command == "DoorClose") /*NBMX*/
 	{ // Ra: uwzględnić trzeba jeszcze zgodność sprzęgów
-		if ((CValue2 > 0))
-		{ // normalne ustawienie pojazdu
-			if ((CValue1 == 1) || (CValue1 == 3))
-				DoorLeftOpened = false;
-			if ((CValue1 == 2) || (CValue1 == 3))
-				DoorRightOpened = false;
-		}
-		else
-		{ // odwrotne ustawienie pojazdu
-			if ((CValue1 == 2) || (CValue1 == 3))
-				DoorLeftOpened = false;
-			if ((CValue1 == 1) || (CValue1 == 3))
-				DoorRightOpened = false;
-		}
+        if( ( DoorCloseCtrl == control::conductor )
+         || ( DoorCloseCtrl == control::driver ) 
+         || ( DoorCloseCtrl == control::mixed ) ) {
+            // ignore remote command if the door is only operated locally
+            if( CValue2 > 0 ) {
+                // normalne ustawienie pojazdu
+                if( ( CValue1 == 1 ) || ( CValue1 == 3 ) )
+                    DoorLeftOpened = false;
+                if( ( CValue1 == 2 ) || ( CValue1 == 3 ) )
+                    DoorRightOpened = false;
+            }
+            else {
+                // odwrotne ustawienie pojazdu
+                if( ( CValue1 == 2 ) || ( CValue1 == 3 ) )
+                    DoorLeftOpened = false;
+                if( ( CValue1 == 1 ) || ( CValue1 == 3 ) )
+                    DoorRightOpened = false;
+            }
+        }
         OK = SendCtrlToNext( Command, CValue1, CValue2, Couplertype );
 	}
     else if( Command == "DepartureSignal" ) {
diff --git a/MdlMngr.cpp b/MdlMngr.cpp
index 2013afb6..13233c19 100644
--- a/MdlMngr.cpp
+++ b/MdlMngr.cpp
@@ -18,6 +18,7 @@ http://mozilla.org/MPL/2.0/.
 
 #include "Model3d.h"
 #include "Globals.h"
+#include "Logs.h"
 #include "utilities.h"
 
 // wczytanie modelu do kontenerka
@@ -78,42 +79,76 @@ TModelsManager::GetModel(std::string const &Name, bool const Dynamic)
     // - wczytanie uproszczonego wnętrza, ścieżka dokładna, tekstury z katalogu modelu
     // - niebo animowane, ścieżka brana ze wpisu, tekstury nieokreślone
     // - wczytanie modelu animowanego - Init() - sprawdzić
-	std::string buf;
-    std::string const buftp = Global.asCurrentTexturePath; // zapamiętanie aktualnej ścieżki do tekstur,
-    if( Name.find('\\') == std::string::npos )
-    {
-        buf = "models\\" + Name; // Ra: było by lepiej katalog dodać w parserze
-        if( Name.find( '/') != std::string::npos)
-        {
-            Global.asCurrentTexturePath = Global.asCurrentTexturePath + Name;
-            Global.asCurrentTexturePath.erase(Global.asCurrentTexturePath.find("/") + 1,
-                                                Global.asCurrentTexturePath.length());
-        }
+    std::string const buftp { Global.asCurrentTexturePath }; // zapamiętanie aktualnej ścieżki do tekstur,
+    std::string filename { Name };
+    if( Name.find( '/' ) != std::string::npos ) {
+        // pobieranie tekstur z katalogu, w którym jest model
+        Global.asCurrentTexturePath += Name;
+        Global.asCurrentTexturePath.erase( Global.asCurrentTexturePath.rfind( "/" ) + 1 );
     }
-    else
-    {
-		buf = Name;
-        if( Dynamic ) {
-            // na razie tak, bo nie wiadomo, jaki może mieć wpływ na pozostałe modele
-            if( Name.find( '/' ) != std::string::npos ) { // pobieranie tekstur z katalogu, w którym jest model
-                Global.asCurrentTexturePath = Global.asCurrentTexturePath + Name;
-                Global.asCurrentTexturePath.erase(
-                    Global.asCurrentTexturePath.find( "/" ) + 1,
-                    Global.asCurrentTexturePath.length() - 1 );
-            }
-        }
-    }
-	buf = ToLower( buf );
 
-    auto const lookup = m_modelsmap.find( buf );
-    if( lookup != m_modelsmap.end() ) {
+    filename = ToLower( filename );
+    if( ( filename.rfind( '.' ) != std::string::npos )
+     && ( filename.rfind( '.' ) != filename.rfind( ".." ) + 1 ) ) {
+        // trim extension if there's one, but don't mistake folder traverse for extension
+        filename.erase( filename.rfind( '.' ) );
+    }
+
+    // see if we have it in the databank
+    auto *model { find_in_databank( filename ) };
+    if( model != nullptr ) {
         Global.asCurrentTexturePath = buftp;
-        return ( m_models[ lookup->second ].Model.get() );
+        return model;
     }
 
-    auto model = LoadModel(buf, Dynamic); // model nie znaleziony, to wczytać
+    // not yet loaded, check if it's on disk
+    std::string lookup { find_on_disk( filename ) };
+
+    if( false == lookup.empty() ) {
+        model = LoadModel( lookup, Dynamic ); // model nie znaleziony, to wczytać
+    }
+    else {
+        // there's nothing matching in the databank nor on the disk, report failure
+        ErrorLog( "Bad file: failed do locate 3d model file \"" + filename + "\"", logtype::file );
+    }
     Global.asCurrentTexturePath = buftp; // odtworzenie ścieżki do tekstur
     return model; // NULL jeśli błąd
 };
 
+TModel3d *
+TModelsManager::find_in_databank( std::string const &Name ) {
+
+    std::vector<std::string> filenames {
+        Name,
+        szModelPath + Name };
+
+    for( auto const &filename : filenames ) {
+        auto const lookup { m_modelsmap.find( filename ) };
+        if( lookup != m_modelsmap.end() ) {
+            return ( m_models[ lookup->second ].Model.get() );
+        }
+    }
+
+    return nullptr;
+}
+
+// checks whether specified file exists. returns name of the located file, or empty string.
+std::string
+TModelsManager::find_on_disk( std::string const &Name ) {
+
+    std::vector<std::string> extensions { { ".e3d" }, { ".t3d" } };
+    for( auto const &extension : extensions ) {
+
+        auto lookup = (
+            FileExists( Name + extension ) ? Name :
+            FileExists( szModelPath + Name + extension ) ? szModelPath + Name :
+            "" );
+        if( false == lookup.empty() ) {
+            return lookup;
+        }
+    }
+
+    return {};
+}
+
 //---------------------------------------------------------------------------
diff --git a/MdlMngr.h b/MdlMngr.h
index 540a9820..c4d56287 100644
--- a/MdlMngr.h
+++ b/MdlMngr.h
@@ -20,6 +20,11 @@ private:
 
 // klasa statyczna, nie ma obiektu
 class TModelsManager {
+public:
+    // McZapkie: dodalem sciezke, notabene Path!=Patch :)
+    static TModel3d *GetModel( std::string const &Name, bool dynamic = false );
+
+private:
 // types:
     typedef std::deque<TMdlContainer> modelcontainer_sequence;
     typedef std::unordered_map<std::string, modelcontainer_sequence::size_type> stringmodelcontainerindex_map;
@@ -28,9 +33,10 @@ class TModelsManager {
     static stringmodelcontainerindex_map m_modelsmap;
 // methods:
     static TModel3d *LoadModel( std::string const &Name, bool const Dynamic );
-public:
-    // McZapkie: dodalem sciezke, notabene Path!=Patch :)
-    static TModel3d *GetModel( std::string const &Name, bool dynamic = false );
+    static TModel3d *find_in_databank( std::string const &Name );
+    // checks whether specified file exists. returns name of the located file, or empty string.
+    static std::string find_on_disk( std::string const &Name );
+
 };
 
 //---------------------------------------------------------------------------
diff --git a/PyInt.cpp b/PyInt.cpp
index 53c3184b..e426af9f 100644
--- a/PyInt.cpp
+++ b/PyInt.cpp
@@ -591,4 +591,4 @@ void TPythonScreens::_freeTrainState()
         Py_CLEAR(_trainState);
         _trainState = NULL;
     }
-}
+}
\ No newline at end of file
diff --git a/PyInt.h b/PyInt.h
index 89b86c13..aad4411c 100644
--- a/PyInt.h
+++ b/PyInt.h
@@ -101,4 +101,4 @@ class TPythonScreens
     void finish();
 };
 
-#endif // PyIntH
+#endif // PyIntH
\ No newline at end of file
diff --git a/Texture.cpp b/Texture.cpp
index 2385d606..fba8f6ca 100644
--- a/Texture.cpp
+++ b/Texture.cpp
@@ -647,7 +647,8 @@ opengl_texture::create() {
             else {
                 // uncompressed texture data. have the gfx card do the compression as it sees fit
                 ::glTexImage2D(
-                    GL_TEXTURE_2D, 0, Global.compress_tex ? GL_COMPRESSED_RGBA : GL_RGBA,
+                    GL_TEXTURE_2D, 0,
+					Global.compress_tex ? GL_COMPRESSED_RGBA : GL_RGBA,
                     data_width, data_height, 0,
                     data_format, GL_UNSIGNED_BYTE, (GLubyte *)&data[ 0 ] );
             }
@@ -821,7 +822,10 @@ texture_manager::create( std::string Filename, bool const Loadnow ) {
         Filename.erase( Filename.rfind( '.' ) );
     }
 
-	std::replace(Filename.begin(), Filename.end(), '\\', '/'); // fix slashes
+    // change slashes to cross-platform
+    std::replace(
+        std::begin( Filename ), std::end( Filename ),
+        '\\', '/' );
 
     std::vector<std::string> extensions{ { ".dds" }, { ".tga" }, { ".png" }, { ".bmp" }, { ".ext" } };
 
@@ -998,17 +1002,19 @@ texture_manager::info() const {
 texture_handle
 texture_manager::find_in_databank( std::string const &Texturename ) const {
 
-    auto lookup = m_texturemappings.find( Texturename );
-    if( lookup != m_texturemappings.end() ) {
-        return (int)lookup->second;
-    }
-    // jeszcze próba z dodatkową ścieżką
-    lookup = m_texturemappings.find( global_texture_path + Texturename );
+    std::vector<std::string> filenames {
+        Global.asCurrentTexturePath + Texturename,
+        Texturename,
+        szTexturePath + Texturename };
 
-    return (
-        lookup != m_texturemappings.end() ?
-            (int)lookup->second :
-            npos );
+    for( auto const &filename : filenames ) {
+        auto const lookup { m_texturemappings.find( filename ) };
+        if( lookup != m_texturemappings.end() ) {
+            return lookup->second;
+        }
+    }
+
+    return npos;
 }
 
 // checks whether specified file exists.
@@ -1016,8 +1022,9 @@ std::string
 texture_manager::find_on_disk( std::string const &Texturename ) const {
 
     return(
+        FileExists( Global.asCurrentTexturePath + Texturename ) ? Global.asCurrentTexturePath + Texturename :
         FileExists( Texturename ) ? Texturename :
-        FileExists( global_texture_path + Texturename ) ? global_texture_path + Texturename :
+        FileExists( szTexturePath + Texturename ) ? szTexturePath + Texturename :
         "" );
 }
 
diff --git a/Train.cpp b/Train.cpp
index a38bebc8..92ba5c36 100644
--- a/Train.cpp
+++ b/Train.cpp
@@ -380,12 +380,12 @@ bool TTrain::Init(TDynamicObject *NewDynamicObject, bool e3d)
            }
          }
     */
-    MechSpring.Init(250);
+    MechSpring.Init(125.0);
     vMechVelocity = Math3D::vector3(0, 0, 0);
     pMechOffset = Math3D::vector3( 0, 0, 0 );
-    fMechSpringX = 1;
-    fMechSpringY = 0.5;
-    fMechSpringZ = 0.5;
+    fMechSpringX = 0.2;
+    fMechSpringY = 0.2;
+    fMechSpringZ = 0.1;
     fMechMaxSpring = 0.15;
     fMechRoll = 0.05;
     fMechPitch = 0.1;
@@ -3296,9 +3296,6 @@ void TTrain::OnCommand_doorlocktoggle( TTrain *Train, command_data const &Comman
 
 void TTrain::OnCommand_doortoggleleft( TTrain *Train, command_data const &Command ) {
 
-    if( Train->mvOccupied->DoorOpenCtrl != 1 ) {
-        return;
-    }
     if( Command.action == GLFW_PRESS ) {
         // NOTE: test how the door state check works with consists where the occupied vehicle doesn't have opening doors
         if( false == (
@@ -3306,76 +3303,74 @@ void TTrain::OnCommand_doortoggleleft( TTrain *Train, command_data const &Comman
                 Train->mvOccupied->DoorLeftOpened :
                 Train->mvOccupied->DoorRightOpened ) ) {
             // open
+            if( Train->mvOccupied->DoorOpenCtrl != control::driver ) {
+                return;
+            }
             if( Train->mvOccupied->ActiveCab == 1 ) {
-                if( Train->mvOccupied->DoorLeft( true ) ) {
-                    Train->ggDoorLeftButton.UpdateValue( 1.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorLeft( true );
             }
             else {
                 // in the rear cab sides are reversed...
-                if( Train->mvOccupied->DoorRight( true ) ) {
-                    // ...but so are the switches
-                    Train->ggDoorLeftButton.UpdateValue( 1.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorRight( true );
             }
+            // visual feedback
+            Train->ggDoorLeftButton.UpdateValue( 1.0, Train->dsbSwitch );
         }
         else {
             // close
+            if( Train->mvOccupied->DoorCloseCtrl != control::driver ) {
+                return;
+            }
+            // TODO: move door opening/closing to the update, so the switch animation doesn't hinge on door working
             if( Train->mvOccupied->ActiveCab == 1 ) {
-                if( Train->mvOccupied->DoorLeft( false ) ) {
-                    Train->ggDoorLeftButton.UpdateValue( 0.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorLeft( false );
             }
             else {
                 // in the rear cab sides are reversed...
-                if( Train->mvOccupied->DoorRight( false ) ) {
-                    // ...but so are the switches
-                    Train->ggDoorLeftButton.UpdateValue( 0.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorRight( false );
             }
+            // visual feedback
+            Train->ggDoorLeftButton.UpdateValue( 0.0, Train->dsbSwitch );
         }
     }
 }
 
 void TTrain::OnCommand_doortoggleright( TTrain *Train, command_data const &Command ) {
 
-    if( Train->mvOccupied->DoorOpenCtrl != 1 ) {
-        return;
-    }
     if( Command.action == GLFW_PRESS ) {
         // NOTE: test how the door state check works with consists where the occupied vehicle doesn't have opening doors
         if( false == (
             Train->mvOccupied->ActiveCab == 1 ?
-            Train->mvOccupied->DoorRightOpened :
-            Train->mvOccupied->DoorLeftOpened ) ) {
+                Train->mvOccupied->DoorRightOpened :
+                Train->mvOccupied->DoorLeftOpened ) ) {
             // open
+            if( Train->mvOccupied->DoorOpenCtrl != control::driver ) {
+                return;
+            }
             if( Train->mvOccupied->ActiveCab == 1 ) {
-                if( Train->mvOccupied->DoorRight( true ) ) {
-                    Train->ggDoorRightButton.UpdateValue( 1.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorRight( true );
             }
             else {
                 // in the rear cab sides are reversed...
-                if( Train->mvOccupied->DoorLeft( true ) ) {
-                    // ...but so are the switches
-                    Train->ggDoorRightButton.UpdateValue( 1.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorLeft( true );
             }
+            // visual feedback
+            Train->ggDoorRightButton.UpdateValue( 1.0, Train->dsbSwitch );
         }
         else {
             // close
+            if( Train->mvOccupied->DoorCloseCtrl != control::driver ) {
+                return;
+            }
             if( Train->mvOccupied->ActiveCab == 1 ) {
-                if( Train->mvOccupied->DoorRight( false ) ) {
-                    Train->ggDoorRightButton.UpdateValue( 0.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorRight( false );
             }
             else {
                 // in the rear cab sides are reversed...
-                if( Train->mvOccupied->DoorLeft( false ) ) {
-                    // ...but so are the switches
-                    Train->ggDoorRightButton.UpdateValue( 0.0, Train->dsbSwitch );
-                }
+                Train->mvOccupied->DoorLeft( false );
             }
+            // visual feedback
+            Train->ggDoorRightButton.UpdateValue( 0.0, Train->dsbSwitch );
         }
     }
 }
diff --git a/material.cpp b/material.cpp
index 2dcd80a3..7e504433 100644
--- a/material.cpp
+++ b/material.cpp
@@ -69,14 +69,14 @@ opengl_material::deserialize_mapping( cParser &Input, int const Priority, bool c
         else if( key == "texture1:" ) {
             if( ( texture1 == null_handle )
              || ( Priority > priority1 ) ) {
-                texture1 = GfxRenderer.Fetch_Texture( path( name ) + value, Loadnow );
+                texture1 = GfxRenderer.Fetch_Texture( value, Loadnow );
                 priority1 = Priority;
             }
         }
         else if( key == "texture2:" ) {
             if( ( texture2 == null_handle )
              || ( Priority > priority2 ) ) {
-                texture2 = GfxRenderer.Fetch_Texture( path( name ) + value, Loadnow );
+                texture2 = GfxRenderer.Fetch_Texture( value, Loadnow );
                 priority2 = Priority;
             }
         }
@@ -120,12 +120,10 @@ material_manager::create( std::string const &Filename, bool const Loadnow ) {
     }
     filename += ".mat";
 
-	std::replace(filename.begin(), filename.end(), '\\', '/'); // fix slashes
-
-    if( filename.find( '/' ) == std::string::npos ) {
-        // jeśli bieżaca ścieżka do tekstur nie została dodana to dodajemy domyślną
-        filename = global_texture_path + filename;
-    }
+    // change slashes to llinux-compatible
+    std::replace(
+        std::begin( filename ), std::end( filename ),
+        '\\', '/' );
 
     // try to locate requested material in the databank
     auto const databanklookup = find_in_databank( filename );
@@ -168,7 +166,7 @@ material_manager::find_in_databank( std::string const &Materialname ) const {
         return lookup->second;
     }
     // jeszcze próba z dodatkową ścieżką
-    lookup = m_materialmappings.find( global_texture_path + Materialname );
+    lookup = m_materialmappings.find( szTexturePath + Materialname );
 
     return (
         lookup != m_materialmappings.end() ?
@@ -183,7 +181,7 @@ material_manager::find_on_disk( std::string const &Materialname ) const {
 
     return(
         FileExists( Materialname ) ? Materialname :
-        FileExists( global_texture_path + Materialname ) ? global_texture_path + Materialname :
+        FileExists( szTexturePath + Materialname ) ? szTexturePath + Materialname :
         "" );
 }
 
diff --git a/renderer.cpp b/renderer.cpp
index af035fc6..413be26b 100644
--- a/renderer.cpp
+++ b/renderer.cpp
@@ -182,11 +182,11 @@ opengl_renderer::Init( GLFWwindow *Window ) {
     }
     // preload some common textures
     WriteLog( "Loading common gfx data..." );
-    m_glaretexture = Fetch_Texture( "fx\\lightglare" );
-    m_suntexture = Fetch_Texture( "fx\\sun" );
-    m_moontexture = Fetch_Texture( "fx\\moon" );
+    m_glaretexture = Fetch_Texture( "fx/lightglare" );
+    m_suntexture = Fetch_Texture( "fx/sun" );
+    m_moontexture = Fetch_Texture( "fx/moon" );
     if( m_helpertextureunit >= 0 ) {
-        m_reflectiontexture = Fetch_Texture( "fx\\reflections" );
+        m_reflectiontexture = Fetch_Texture( "fx/reflections" );
     }
     WriteLog( "...gfx data pre-loading done" );
 
diff --git a/station.cpp b/station.cpp
index ab3d7e62..b9b4b441 100644
--- a/station.cpp
+++ b/station.cpp
@@ -15,7 +15,7 @@ http://mozilla.org/MPL/2.0/.
 
 // exchanges load with consist attached to specified vehicle, operating on specified schedule
 double
-basic_station::update_load( TDynamicObject *First, Mtable::TTrainParameters &Schedule ) {
+basic_station::update_load( TDynamicObject *First, Mtable::TTrainParameters &Schedule, int const Platform ) {
 
     auto const firststop { Schedule.StationIndex == 1 };
     auto const laststop { Schedule.StationIndex == Schedule.StationCount };
@@ -30,7 +30,13 @@ basic_station::update_load( TDynamicObject *First, Mtable::TTrainParameters &Sch
     auto const stationsizemodifier { ( trainstop ? 1.0 : 2.0 ) };
     // go through all vehicles and update their load
     // NOTE: for the time being we limit ourselves to passenger-carrying cars only
-    auto exchangetime { 0.0 };
+    auto exchangetime { 0.f };
+    // platform (1:left, 2:right, 3:both)
+    // with exchange performed on both sides waiting times are halved
+    auto const exchangetimemodifier { (
+        Platform == 3 ?
+            0.5f :
+            1.0f ) };
 
     auto *vehicle { First };
     while( vehicle != nullptr ) {
@@ -47,24 +53,29 @@ basic_station::update_load( TDynamicObject *First, Mtable::TTrainParameters &Sch
             // NOTE: for the time being we're doing simple, random load change calculation
             // TODO: exchange driven by station parameters and time of the day
             auto unloadcount = static_cast<int>(
-                firststop ? 0 :
                 laststop ? parameters.Load :
-                std::min(
+                firststop ? 0 :
+                std::min<float>(
                     parameters.Load,
                     Random( parameters.MaxLoad * 0.10 * stationsizemodifier ) ) );
             auto loadcount = static_cast<int>(
                 laststop ?
                     0 :
-                    Random( parameters.MaxLoad * 0.15 * stationsizemodifier ) );
+                    Random( parameters.MaxLoad * 0.15f * stationsizemodifier ) );
             if( true == firststop ) {
                 // slightly larger group at the initial station
                 loadcount *= 2;
             }
-            parameters.Load = std::min( parameters.MaxLoad, parameters.Load - unloadcount + loadcount );
-            vehicle->LoadUpdate();
-            vehicle->update_load_visibility();
 
-            exchangetime = std::max( exchangetime, unloadcount / parameters.UnLoadSpeed + loadcount / parameters.LoadSpeed);
+            if( ( unloadcount > 0 ) || ( loadcount > 0 ) ) {
+
+                vehicle->LoadExchange( unloadcount, loadcount, Platform );
+/*
+                vehicle->LoadUpdate();
+                vehicle->update_load_visibility();
+*/
+                exchangetime = std::max( exchangetime, exchangetimemodifier * ( unloadcount / parameters.UnLoadSpeed + loadcount / parameters.LoadSpeed ) );
+            }
         }
         vehicle = vehicle->Next();
     }
diff --git a/station.h b/station.h
index 84f28f5e..1b6ef061 100644
--- a/station.h
+++ b/station.h
@@ -18,5 +18,5 @@ public:
 // methods
     // exchanges load with consist attached to specified vehicle, operating on specified schedule; returns: time needed for exchange, in seconds
     double
-        update_load( TDynamicObject *First, Mtable::TTrainParameters &Schedule );
+        update_load( TDynamicObject *First, Mtable::TTrainParameters &Schedule, int const Platform );
 };
diff --git a/utilities.h b/utilities.h
index 4b8e4135..5abdbae3 100644
--- a/utilities.h
+++ b/utilities.h
@@ -25,12 +25,10 @@ http://mozilla.org/MPL/2.0/.
 #define DegToRad(a) ((M_PI / 180.0) * (a)) //(a) w nawiasie, bo może być dodawaniem
 #define RadToDeg(r) ((180.0 / M_PI) * (r))
 
-#define asModelsPath std::string("models\\")
-#define asSceneryPath std::string("scenery\\")
-#define szSceneryPath "scenery\\"
-#define szTexturePath "textures\\"
-#define szSoundPath "sounds\\"
-#define global_texture_path "textures/"
+#define szSceneryPath "scenery/"
+#define szTexturePath "textures/"
+#define szModelPath "models/"
+#define szSoundPath "sounds/"
 
 #define MAKE_ID4(a,b,c,d) (((std::uint32_t)(d)<<24)|((std::uint32_t)(c)<<16)|((std::uint32_t)(b)<<8)|(std::uint32_t)(a))