diff --git a/OpenRA.Mods.Common/Traits/Mobile.cs b/OpenRA.Mods.Common/Traits/Mobile.cs
index 9f4bede314..5e7124b86d 100644
--- a/OpenRA.Mods.Common/Traits/Mobile.cs
+++ b/OpenRA.Mods.Common/Traits/Mobile.cs
@@ -53,6 +53,10 @@ namespace OpenRA.Mods.Common.Traits
 		[Desc("Boolean expression defining the condition under which the regular (non-force) move cursor is disabled.")]
 		public readonly BooleanExpression RequireForceMoveCondition = null;
 
+		[ConsumedConditionReference]
+		[Desc("Boolean expression defining the condition under which this actor cannot be nudged by other actors.")]
+		public readonly BooleanExpression ImmovableCondition = null;
+
 		IEnumerable<object> IActorPreviewInitInfo.ActorPreviewInits(ActorInfo ai, ActorPreviewType type)
 		{
 			yield return new FacingInit(PreviewFacing);
@@ -180,7 +184,9 @@ namespace OpenRA.Mods.Common.Traits
 		INotifyMoving[] notifyMoving;
 		INotifyFinishedMoving[] notifyFinishedMoving;
 		IWrapMove[] moveWrappers;
-		public bool RequireForceMove;
+		bool requireForceMove;
+
+		public bool IsImmovable { get; private set; }
 		public bool TurnToMove;
 		public bool IsBlocking { get; private set; }
 
@@ -332,7 +338,7 @@ namespace OpenRA.Mods.Common.Traits
 
 		public void Nudge(Actor nudger)
 		{
-			if (IsTraitDisabled || IsTraitPaused || RequireForceMove)
+			if (IsTraitDisabled || IsTraitPaused || IsImmovable)
 				return;
 
 			var cell = GetAdjacentCell(nudger.Location);
@@ -375,7 +381,7 @@ namespace OpenRA.Mods.Common.Traits
 				return false;
 
 			var mobile = otherActor.TraitOrDefault<Mobile>();
-			if (mobile == null || mobile.IsTraitDisabled || mobile.IsTraitPaused || mobile.RequireForceMove)
+			if (mobile == null || mobile.IsTraitDisabled || mobile.IsTraitPaused || mobile.IsImmovable)
 				return false;
 
 			return true;
@@ -857,11 +863,22 @@ namespace OpenRA.Mods.Common.Traits
 
 			if (Info.RequireForceMoveCondition != null)
 				yield return new VariableObserver(RequireForceMoveConditionChanged, Info.RequireForceMoveCondition.Variables);
+
+			if (Info.ImmovableCondition != null)
+				yield return new VariableObserver(ImmovableConditionChanged, Info.ImmovableCondition.Variables);
 		}
 
 		void RequireForceMoveConditionChanged(Actor self, IReadOnlyDictionary<string, int> conditions)
 		{
-			RequireForceMove = Info.RequireForceMoveCondition.Evaluate(conditions);
+			requireForceMove = Info.RequireForceMoveCondition.Evaluate(conditions);
+		}
+
+		void ImmovableConditionChanged(Actor self, IReadOnlyDictionary<string, int> conditions)
+		{
+			var wasImmovable = IsImmovable;
+			IsImmovable = Info.ImmovableCondition.Evaluate(conditions);
+			if (wasImmovable != IsImmovable)
+				self.World.ActorMap.UpdateOccupiedCells(self.OccupiesSpace);
 		}
 
 		IEnumerable<IOrderTargeter> IIssueOrder.Orders
@@ -957,7 +974,7 @@ namespace OpenRA.Mods.Common.Traits
 
 			public bool CanTarget(Actor self, Target target, List<Actor> othersAtTarget, ref TargetModifiers modifiers, ref string cursor)
 			{
-				if (rejectMove || target.Type != TargetType.Terrain || (mobile.RequireForceMove && !modifiers.HasModifier(TargetModifiers.ForceMove)))
+				if (rejectMove || target.Type != TargetType.Terrain || (mobile.requireForceMove && !modifiers.HasModifier(TargetModifiers.ForceMove)))
 					return false;
 
 				var location = self.World.Map.CellContaining(target.CenterPosition);
diff --git a/OpenRA.Mods.Common/Traits/World/Locomotor.cs b/OpenRA.Mods.Common/Traits/World/Locomotor.cs
index 16beb435f5..93cd0c0645 100644
--- a/OpenRA.Mods.Common/Traits/World/Locomotor.cs
+++ b/OpenRA.Mods.Common/Traits/World/Locomotor.cs
@@ -334,7 +334,7 @@ namespace OpenRA.Mods.Common.Traits
 				self.Owner.Stances[otherActor.Owner] == Stance.Ally)
 			{
 				var mobile = otherActor.TraitOrDefault<Mobile>();
-				if (mobile != null && !mobile.IsTraitDisabled && !mobile.IsTraitPaused && !mobile.RequireForceMove)
+				if (mobile != null && !mobile.IsTraitDisabled && !mobile.IsTraitPaused && !mobile.IsImmovable)
 					return false;
 			}
 
@@ -487,7 +487,7 @@ namespace OpenRA.Mods.Common.Traits
 
 					var crushables = actor.TraitsImplementing<ICrushable>();
 					var mobile = actor.OccupiesSpace as Mobile;
-					var isMovable = mobile != null && !mobile.IsTraitDisabled && !mobile.IsTraitPaused && !mobile.RequireForceMove;
+					var isMovable = mobile != null && !mobile.IsTraitDisabled && !mobile.IsTraitPaused && !mobile.IsImmovable;
 					var isMoving = isMovable && mobile.CurrentMovementTypes.HasMovementType(MovementType.Horizontal);
 
 					if (crushables.Any())
diff --git a/mods/ts/rules/gdi-vehicles.yaml b/mods/ts/rules/gdi-vehicles.yaml
index 9f685e4d4c..1190673350 100644
--- a/mods/ts/rules/gdi-vehicles.yaml
+++ b/mods/ts/rules/gdi-vehicles.yaml
@@ -332,6 +332,7 @@ JUGG:
 	Mobile:
 		Speed: 71
 		TurnSpeed: 5
+		ImmovableCondition: !undeployed
 		RequireForceMoveCondition: !undeployed
 	RevealsShroud:
 		RequiresCondition: !inside-tunnel
diff --git a/mods/ts/rules/nod-vehicles.yaml b/mods/ts/rules/nod-vehicles.yaml
index 4cfee3dba7..7e3f159d46 100644
--- a/mods/ts/rules/nod-vehicles.yaml
+++ b/mods/ts/rules/nod-vehicles.yaml
@@ -104,6 +104,7 @@ TTNK:
 	Mobile:
 		TurnSpeed: 5
 		Speed: 85
+		ImmovableCondition: !undeployed
 		RequireForceMoveCondition: !undeployed
 	Health:
 		HP: 35000
@@ -232,6 +233,7 @@ ART2:
 	Mobile:
 		Speed: 71
 		TurnSpeed: 2
+		ImmovableCondition: !undeployed
 		RequireForceMoveCondition: !undeployed
 	RevealsShroud:
 		RequiresCondition: !inside-tunnel
diff --git a/mods/ts/rules/shared-vehicles.yaml b/mods/ts/rules/shared-vehicles.yaml
index 58bff0d37e..a23a975d5b 100644
--- a/mods/ts/rules/shared-vehicles.yaml
+++ b/mods/ts/rules/shared-vehicles.yaml
@@ -127,6 +127,7 @@ LPST:
 	Mobile:
 		Speed: 85
 		TurnSpeed: 5
+		ImmovableCondition: !undeployed
 		RequireForceMoveCondition: !undeployed
 	RevealsShroud:
 		RequiresCondition: !inside-tunnel && undeployed