openrails
diff --git a/‎Source/Orts.Simulation/Simulation/RollingStocks/MSTSDieselLocomotive.cs
Lines changed: 1 addition & 1 deletion b/‎Source/Orts.Simulation/Simulation/RollingStocks/MSTSDieselLocomotive.cs
Lines changed: 1 addition & 1 deletion
@@ -757,7 +757,7 @@ protected override void UpdateTractiveForce(float elapsedClockSeconds, float t,
             // Note typically only one of the above will only ever be non-zero at the one time.
             // For flipped locomotives the force is "flipped" elsewhere, whereas dynamic brake force is "flipped" below by the direction of the speed.
 
-            if (DynamicBrakePercent > 0 && DynamicBrakeForceCurves != null && AbsSpeedMpS > 0)
+            if (DynamicBrakePercent > 0 && DynamicBrake && DynamicBrakeForceCurves != null && AbsSpeedMpS > 0)
             {
                 float f = DynamicBrakeForceCurves.Get(.01f * DynamicBrakePercent, AbsTractionSpeedMpS);
                 if (f > 0 && LocomotivePowerSupply.DynamicBrakeAvailable)
Original file line number	Diff line number	Diff line change
`@@ -757,7 +757,7 @@ protected override void UpdateTractiveForce(float elapsedClockSeconds, float t,`
`757`	`757`	`// Note typically only one of the above will only ever be non-zero at the one time.`
`758`	`758`	`// For flipped locomotives the force is "flipped" elsewhere, whereas dynamic brake force is "flipped" below by the direction of the speed.`
`759`	`759`
`760`		`- if (DynamicBrakePercent > 0 && DynamicBrakeForceCurves != null && AbsSpeedMpS > 0)`
	`760`	`+ if (DynamicBrakePercent > 0 && DynamicBrake && DynamicBrakeForceCurves != null && AbsSpeedMpS > 0)`
`761`	`761`	`{`
`762`	`762`	`float f = DynamicBrakeForceCurves.Get(.01f * DynamicBrakePercent, AbsTractionSpeedMpS);`
`763`	`763`	`if (f > 0 && LocomotivePowerSupply.DynamicBrakeAvailable)`