set minimum lookahead distance twice as long as the current simulation...

set minimum lookahead distance twice as long as the current simulation distance (to 'see' what happens after the current simulation interval)

VectoCore/Models/SimulationComponent/Impl/DefaultDriverStrategy.cs

@@ -85,7 +85,7 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 			}
 			if (CurrentDrivingMode == DrivingMode.DrivingModeDrive) {
 				var currentDistance = Driver.DataBus.Distance;
-				UpdateDrivingAction(currentDistance);
+				UpdateDrivingAction(currentDistance, ds);
 				if (NextDrivingAction != null) {
 					var remainingDistance = NextDrivingAction.ActionDistance - currentDistance;
 					var estimatedNextTimestep = remainingDistance / Driver.DataBus.VehicleSpeed;
@@ -124,9 +124,9 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 		public DrivingBehavior DriverBehavior { get; internal set; }
 
 
-		private void UpdateDrivingAction(Meter currentDistance)
+		private void UpdateDrivingAction(Meter currentDistance, Meter ds)
 		{
-			var nextAction = GetNextDrivingAction(currentDistance);
+			var nextAction = GetNextDrivingAction(currentDistance, ds);
 			if (NextDrivingAction == null) {
 				if (nextAction != null) {
 					// take the new action
@@ -172,15 +172,15 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 		}
 
 
-		protected DrivingBehaviorEntry GetNextDrivingAction(Meter minDistance)
+		protected DrivingBehaviorEntry GetNextDrivingAction(Meter minDistance, Meter ds)
 		{
 			var currentSpeed = Driver.DataBus.VehicleSpeed;
 
 			// distance until halt
 			var lookaheadDistance = Formulas.DecelerationDistance(currentSpeed, 0.SI<MeterPerSecond>(),
 				Driver.DriverData.LookAheadCoasting.Deceleration);
-
-			var lookaheadData = Driver.DataBus.LookAhead(1.2 * lookaheadDistance);
+			lookaheadDistance = VectoMath.Max(2 * ds, 1.2 * lookaheadDistance);
+			var lookaheadData = Driver.DataBus.LookAhead(lookaheadDistance);
 
 			Log.Debug("Lookahead distance: {0} @ current speed {1}", lookaheadDistance, currentSpeed);
 			var nextActions = new List<DrivingBehaviorEntry>();
@@ -192,8 +192,9 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 					if (!Driver.DriverData.LookAheadCoasting.Enabled ||
 						currentSpeed < Driver.DriverData.LookAheadCoasting.MinSpeed) {
 						var brakingDistance = Driver.ComputeDecelerationDistance(nextTargetSpeed) + BrakingSafetyMargin;
-						Log.Debug("adding 'Braking' starting at distance {0}. brakingDistance: {1}, triggerDistance: {2}",
-							entry.Distance - brakingDistance, brakingDistance, entry.Distance);
+						Log.Debug(
+							"adding 'Braking' starting at distance {0}. brakingDistance: {1}, triggerDistance: {2}, nextTargetSpeed: {3}",
+							entry.Distance - brakingDistance, brakingDistance, entry.Distance, nextTargetSpeed);
 						nextActions.Add(new DrivingBehaviorEntry {
 							Action = DrivingBehavior.Braking,
 							ActionDistance = entry.Distance - brakingDistance,
@@ -203,8 +204,9 @@ namespace TUGraz.VectoCore.Models.SimulationComponent.Impl
 					} else {
 						var coastingDistance = Formulas.DecelerationDistance(currentSpeed, nextTargetSpeed,
 							Driver.DriverData.LookAheadCoasting.Deceleration);
-						Log.Debug("adding 'Coasting' starting at distance {0}. coastingDistance: {1}, triggerDistance: {2}",
-							entry.Distance - coastingDistance, coastingDistance, entry.Distance);
+						Log.Debug(
+							"adding 'Coasting' starting at distance {0}. coastingDistance: {1}, triggerDistance: {2}, nextTargetSpeed: {3}",
+							entry.Distance - coastingDistance, coastingDistance, entry.Distance, nextTargetSpeed);
 						nextActions.Add(
 							new DrivingBehaviorEntry {
 								Action = DrivingBehavior.Coasting,