Automatic merge of T1.5.1-1088-g264349b1ce and 22 pull requests

- Pull request #891 at 9a1d6b2: Auto save
- Pull request #959 at 2452cb0: Fix TrackViewer crash on big zoom value
- Pull request #972 at e90a2aa: On Map window color changed switch or signal is not changed
- Pull request #839 at d00beb9: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #882 at 8f695a4: Blueprint/train car operations UI window
- Pull request #892 at 1f5ba4c: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #922 at a3bc9e7: Autopilot for timetable mode
- Pull request #953 at a519452: Fix Lights Crash on Corrupt Shapes
- Pull request #962 at 46d0472: Fix pantographs on unpowered cars
- Pull request #970 at 6fa5eed: feat: Remove unnecessary Windows.Forms usage
- Pull request #973 at c35be87: fix: Using singular target framework to allow for different platforms across different projects
- Pull request #974 at 5faea6f: Bug fix for https://bugs.launchpad.net/or/+bug/2076034 Doors remain open in AI trains
- Pull request #975 at b2dd5c0: Bug fix for https://bugs.launchpad.net/or/+bug/2076133 Crash when AI train dissolves near camera
- Pull request #900 at c27f32d: DMI updates
- Pull request #903 at 9dabe97: Downloading route content (Github, zip)
- Pull request #799 at dfc715e: Consolidated wind simulation
- Pull request #876 at f92de76: docs: add source for documents previously on website to source Documentation folder
- Pull request #885 at 067662e: feat: Add notifications to Menu
- Pull request #946 at 91a03af: Advanced track sounds
- Pull request #952 at 8347095: Investigation - Pulsing graphics
- Pull request #954 at f837ffd: Multiple Track Profiles & Superelevation Improvements
- Pull request #968 at a88cb26: Initial build of adding track section identifier for rack railway

Author: openrails-bot

Source/RunActivity/Viewer3D/Lights.cs

@@ -293,7 +293,7 @@ bool UpdateState()
             bool newCarIsFirst = !Car.Lights.IgnoredConditions[1] && (locomotiveFlipped ^ locomotiveReverseCab ? Car.Train?.LastCar : Car.Train?.FirstCar) == Car;
             bool newCarIsLast = !Car.Lights.IgnoredConditions[1] && (locomotiveFlipped ^ locomotiveReverseCab ? Car.Train?.FirstCar : Car.Train?.LastCar) == Car;
             // Penalty
-			bool newPenalty = !Car.Lights.IgnoredConditions[2] && Car.Train.TrainType != Train.TRAINTYPE.AI
+			bool newPenalty = !Car.Lights.IgnoredConditions[2] && Car.Train != null && Car.Train.TrainType != Train.TRAINTYPE.AI
                 && leadLocomotive != null && leadLocomotive.TrainBrakeController.EmergencyBraking;
             // Control
             bool newCarIsPlayer = !Car.Lights.IgnoredConditions[3] && Car.Train != null && (Car.Train == Viewer.PlayerTrain || Car.Train.TrainType == Train.TRAINTYPE.REMOTE);