diff --git a/McZapkie/Mover.cpp b/McZapkie/Mover.cpp
index b8d93467..d7799a8b 100644
--- a/McZapkie/Mover.cpp
+++ b/McZapkie/Mover.cpp
@@ -3720,14 +3720,19 @@ void TMoverParameters::ComputeTotalForce(double dt, double dt1, bool FullVer)
                                             Sign(nrot * M_PI * WheelDiameter - V) *
                                                 Adhesive(RunningTrack.friction) * TotalMassxg,
                                         dt, nrot);
-            Fwheels = Sign(nrot * M_PI * WheelDiameter - V) * TotalMassxg * Adhesive(RunningTrack.friction);
+            Fwheels = Sign(temp_nrot * M_PI * WheelDiameter - V) * TotalMassxg * Adhesive(RunningTrack.friction);
 			if (Fwheels*Sign(V)>0)
 			{
-				FTrain = Fwheels - Fb;
+				FTrain = Fwheels + Fb*Sign(V);
+			}
+			else if (FTrain*Sign(V)>0)
+			{
+				Fb = FTrain*Sign(V) - Fwheels*Sign(V);
 			}
 			else
 			{
-				Fb = FTrain - Fwheels;
+				Fb = -Fwheels*Sign(V);
+				FTrain = 0;
 			}
 			if (Sign(nrot * M_PI * WheelDiameter - V)*Sign(temp_nrot * M_PI * WheelDiameter - V) < 0)
 			{
@@ -4630,7 +4635,7 @@ double TMoverParameters::TractionForce(double dt)
                     {
                         PosRatio = -Sign(V) * DirAbsolute * eimv[eimv_Fr] /
                                    (eimc[eimc_p_Fh] *
-                                    Max0R(dtrans / MaxBrakePress[0], AnPos) /*dizel_fill*/);
+                                    Max0R(Max0R(dtrans,0.01) / MaxBrakePress[0], AnPos) /*dizel_fill*/);
                     }
                     else
                         PosRatio = 0;
diff --git a/Train.cpp b/Train.cpp
index 46dbb7b9..e6f4902b 100644
--- a/Train.cpp
+++ b/Train.cpp
@@ -478,11 +478,13 @@ PyObject *TTrain::GetTrainState() {
     PyDict_SetItemString( dict, "velocity", PyGetFloat( mover->Vel ) );
     PyDict_SetItemString( dict, "tractionforce", PyGetFloat( mover->Ft ) );
     PyDict_SetItemString( dict, "slipping_wheels", PyGetBool( mover->SlippingWheels ) );
+	PyDict_SetItemString( dict, "sanding", PyGetBool( mover->SlippingWheels ));
     // electric current data
     PyDict_SetItemString( dict, "traction_voltage", PyGetFloat( mover->RunningTraction.TractionVoltage ) );
     PyDict_SetItemString( dict, "voltage", PyGetFloat( mover->Voltage ) );
     PyDict_SetItemString( dict, "im", PyGetFloat( mover->Im ) );
     PyDict_SetItemString( dict, "fuse", PyGetBool( mover->FuseFlag ) );
+	PyDict_SetItemString( dict, "epfuse", PyGetBool( mover->EpFuse ));
     // induction motor state data
     char* TXTT[ 10 ] = { "fd", "fdt", "fdb", "pd", "pdt", "pdb", "itothv", "1", "2", "3" };
     char* TXTC[ 10 ] = { "fr", "frt", "frb", "pr", "prt", "prb", "im", "vm", "ihv", "uhv" };
@@ -522,6 +524,7 @@ PyObject *TTrain::GetTrainState() {
         PyDict_SetItemString( dict, ( std::string( "code_" ) + std::to_string( i + 1 ) ).c_str(), PyGetString( std::string( std::to_string( iUnits[ i ] ) +
             cCode[ i ] ).c_str() ) );
         PyDict_SetItemString( dict, ( std::string( "car_name" ) + std::to_string( i + 1 ) ).c_str(), PyGetString( asCarName[ i ].c_str() ) );
+		PyDict_SetItemString( dict, ( std::string( "slip_" ) + std::to_string( i + 1 )).c_str(), PyGetBool( bSlip[i]) );
     }
     // ai state data
     auto const &driver = DynamicObject->Mechanik;
@@ -3879,19 +3882,33 @@ if
                     d = d->Prev(); // w drugą stronę też
                 }
             }
-            else if (cKey == GLFW_KEY_RIGHT_BRACKET)
-            {
-                while (d)
-                {
-                    d->Move(-100.0 * d->DirectionGet());
-                    d = d->Next(); // pozostałe też
-                }
-                d = DynamicObject->Prev();
-                while (d)
-                {
-                    d->Move(-100.0 * d->DirectionGet());
-                    d = d->Prev(); // w drugą stronę też
-                }
+			else if (cKey == GLFW_KEY_RIGHT_BRACKET)
+			{
+				while (d)
+				{
+					d->Move(-100.0 * d->DirectionGet());
+					d = d->Next(); // pozostałe też
+				}
+				d = DynamicObject->Prev();
+				while (d)
+				{
+					d->Move(-100.0 * d->DirectionGet());
+					d = d->Prev(); // w drugą stronę też
+				}
+			}
+			else if (cKey == GLFW_KEY_TAB)
+			{
+				while (d)
+				{
+					d->MoverParameters->V+= d->DirectionGet()*2.78;
+					d = d->Next(); // pozostałe też
+				}
+				d = DynamicObject->Prev();
+				while (d)
+				{
+					d->MoverParameters->V += d->DirectionGet()*2.78;
+					d = d->Prev(); // w drugą stronę też
+				}
             }
         }
         if (cKey == GLFW_KEY_MINUS)
@@ -4176,11 +4193,12 @@ bool TTrain::Update( double const Deltatime )
                 bDoors[i][2] = (p->dDoorMoveL > 0.001);
                 iDoorNo[i] = p->iAnimType[ANIM_DOORS];
                 iUnits[i] = iUnitNo;
-                cCode[i] = p->MoverParameters->TypeName[p->MoverParameters->TypeName.length()];
+                cCode[i] = p->MoverParameters->TypeName[p->MoverParameters->TypeName.length()-1];
                 asCarName[i] = p->GetName();
 				bPants[iUnitNo - 1][0] = (bPants[iUnitNo - 1][0] || p->MoverParameters->PantFrontUp);
                 bPants[iUnitNo - 1][1] = (bPants[iUnitNo - 1][1] || p->MoverParameters->PantRearUp);
 				bComp[iUnitNo - 1][0] = (bComp[iUnitNo - 1][0] || p->MoverParameters->CompressorAllow);
+				bSlip[i] = p->MoverParameters->SlippingWheels;
                 if (p->MoverParameters->CompressorSpeed > 0.00001)
                 {
 					bComp[iUnitNo - 1][1] = (bComp[iUnitNo - 1][1] || p->MoverParameters->CompressorFlag);
@@ -4222,6 +4240,7 @@ bool TTrain::Update( double const Deltatime )
                 bDoors[i][0] = false;
                 bDoors[i][1] = false;
                 bDoors[i][2] = false;
+				bSlip[i] = false;
                 iUnits[i] = 0;
                 cCode[i] = 0; //'0';
                 asCarName[i] = "";
diff --git a/Train.h b/Train.h
index c9c9e6d2..de3b00b4 100644
--- a/Train.h
+++ b/Train.h
@@ -464,6 +464,7 @@ public: // reszta może by?publiczna
     int iUnits[20]; // numer jednostki
     int iDoorNo[20]; // liczba drzwi
     char cCode[20]; // kod pojazdu
+	bool bSlip[20]; // poślizg kół pojazdu
     std::string asCarName[20]; // nazwa czlonu
     bool bMains[8]; // WSy
     float fCntVol[8]; // napiecie NN