diff --git a/McZapkie/Mover.cpp b/McZapkie/Mover.cpp
index 83c918e24..a58878ab4 100644
--- a/McZapkie/Mover.cpp
+++ b/McZapkie/Mover.cpp
@@ -5166,8 +5166,8 @@ double TMoverParameters::BrakeForceR(double ratio, double velocity)
 			press = MaxBrakePress[3];
 			if (DynamicBrakeType == dbrake_automatic)
 				ratio = ratio + (1.5 - ratio) * std::min(1.0, Vel * 0.02);
-			if (BrakeDelayFlag & bdelay_R && BrakeMethod % 128 != bp_Cosid && BrakeMethod % 128 != bp_D1 && BrakeMethod % 128 != bp_D2 && Power < 1 && velocity < 40)
-				ratio = ratio / 2;
+			if (BrakeDelayFlag & bdelay_R && BrakeMethod % 128 != bp_Cosid && BrakeMethod % 128 != bp_D1 && BrakeMethod % 128 != bp_D2 && Power < 1)
+				ratio *= Hamulec->GetRapidRatio(velocity);
 			if (TrainType == dt_DMU && velocity < 30.0)
 			{
 				ratio -= 0.3;
diff --git a/McZapkie/Oerlikon_ESt.cpp b/McZapkie/Oerlikon_ESt.cpp
index 9559d3052..d8d5b3da8 100644
--- a/McZapkie/Oerlikon_ESt.cpp
+++ b/McZapkie/Oerlikon_ESt.cpp
@@ -324,6 +324,17 @@ void TNESt3::Init( double const PP, double const HPP, double const LPP, double c
         RapidStaly = false;
 }
 
+double TNESt3::GetRapidRatio(double const Vel) const
+{
+    // ESt3 has no rapid relay, and with disc brakes the rapid step stays engaged at all speeds
+    if( ( PrzekRapid == nullptr ) || ( true == RapidStaly ) ) {
+        return 1.0;
+    }
+    // a braking vehicle comes from above, so the step is still engaged down to the speed
+    // at which GetPF() drops it, not the one at which it engages
+    return ( Vel < 50.0 ? 1.0 / PrzekRapid->GetRapidMult() : 1.0 );
+}
+
 double TNESt3::GetCRP()
 {
     return CntrlRes->P();
diff --git a/McZapkie/Oerlikon_ESt.h b/McZapkie/Oerlikon_ESt.h
index c12691851..180c47206 100644
--- a/McZapkie/Oerlikon_ESt.h
+++ b/McZapkie/Oerlikon_ESt.h
@@ -117,6 +117,7 @@ class TRapid : public TPrzekladnik {
   public:
     void SetRapidParams(double mult, double size);
     void SetRapidStatus(bool rs);
+    double GetRapidMult() const { return RapidMult; }
     void Update(double dt) /*override*/;
 	inline TRapid() :
 		TPrzekladnik()
@@ -213,6 +214,7 @@ class TNESt3 : public TBrake {
     virtual double GetPF( double const PP, double const dt, double const Vel ) /*override*/; // przeplyw miedzy komora wstepna i PG
     void EStParams(double i_crc); // parametry charakterystyczne dla ESt
     virtual double GetCRP() /*override*/;
+    double GetRapidRatio(double const Vel) const override;
     void CheckState(double const BCP, double &dV1); // glowny przyrzad rozrzadczy
     void CheckReleaser(double const dt); // odluzniacz
     double CVs(double const BP); // napelniacz sterujacego
diff --git a/McZapkie/hamulce.h b/McZapkie/hamulce.h
index a05a36359..11b8bdfb3 100644
--- a/McZapkie/hamulce.h
+++ b/McZapkie/hamulce.h
@@ -442,6 +442,11 @@ class TBrake
 	/// <summary>Sets the rapid step ratio. Default no-op; overridden where supported.</summary>
 	/// <param name="RMR">Rapid ratio.</param>
 	virtual void SetRM(double const RMR) {}; // ustalenie przelozenia rapida
+	/// <summary>Share of the full cylinder pressure the distributor delivers at the given speed
+	/// while the vehicle is slowing down through it, for a vehicle set to R. Used only to predict
+	/// the brake force; the default is the approximation BrakeForceR() has always used.</summary>
+	/// <param name="Vel">Vehicle velocity [km/h].</param>
+	virtual double GetRapidRatio(double const Vel) const { return Vel < 40.0 ? 0.5 : 1.0; }
 	/// <summary>Sets the velocity threshold for the rapid step.</summary>
 	/// <param name="RVR">Velocity threshold (same unit as Vel passed to GetPF).</param>
 	virtual void SetRV(double const RVR)