Automatic merge of T1.5.1-974-g2634ac3be and 14 pull requests

- Pull request #799 at dfc715e: Consolidated wind simulation
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #882 at 537db1a: Blueprint/train car operations UI window
- Pull request #891 at 9a1d6b2: Auto save
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #896 at 5866028: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains
- Pull request #900 at c27f32d: DMI updates
- Pull request #903 at 3e390b8: Downloading route content (Github, zip)
- Pull request #912 at cda1d74: New Triple Valve Features Vol. 2
- Pull request #919 at 26cc6a8: Added mouse wheel support for controls which can be moved by pressing t…
- Pull request #922 at abe2e52: Autopilot for timetable mode
- Pull request #923 at 4c27204: Add curve squeal to route
- Pull request #943 at 27fb483: Dynamic Brakes Behavior & Display Improvements

Author: openrails-bot

Source/Orts.Simulation/Simulation/RollingStocks/SubSystems/Brakes/MSTS/AirSinglePipe.cs

@@ -545,7 +545,8 @@ public override void Initialize(bool handbrakeOn, float maxPressurePSI, float fu
                 AutoCylPressurePSI = immediateRelease ? 0 : Math.Min((maxPressurePSI - BrakeLine1PressurePSI) * AuxCylVolumeRatio, MaxTripleValveCylPressurePSI);
             CylPressurePSI = ForceBrakeCylinderPressure(ref CylAirPSIM3, Math.Max(AutoCylPressurePSI * RelayValveRatio, BrakeLine3PressurePSI * EngineRelayValveRatio));
 
-            AuxResPressurePSI = Math.Max(TwoPipes && MRPAuxResCharging && !(Car as MSTSWagon).SupplyReservoirPresent ?
+            AuxResPressurePSI = Math.Max((Car as MSTSWagon).BrakeValve == MSTSWagon.BrakeValveType.Distributor
+                && TwoPipes && MRPAuxResCharging && !(Car as MSTSWagon).SupplyReservoirPresent ?
                 maxPressurePSI : maxPressurePSI - (AutoCylAirPSIM3 / AuxResVolumeM3), BrakeLine1PressurePSI);
             if ((Car as MSTSWagon).EmergencyReservoirPresent)
                 EmergResPressurePSI = Math.Max(AuxResPressurePSI, maxPressurePSI);