diff --git a/OpenRA.Mods.Common/Scripting/Global/TriggerGlobal.cs b/OpenRA.Mods.Common/Scripting/Global/TriggerGlobal.cs
index 195639f7e8..aa034cd795 100644
--- a/OpenRA.Mods.Common/Scripting/Global/TriggerGlobal.cs
+++ b/OpenRA.Mods.Common/Scripting/Global/TriggerGlobal.cs
@@ -51,6 +51,20 @@ namespace OpenRA.Mods.Common.Scripting
 			Context.World.AddFrameEndTask(w => w.Add(new DelayedAction(delay, doCall)));
 		}
 
+		[Desc("Call a function for each passenger when it enters a transport. " +
+		      "The callback function will be called as func(Actor transport, Actor passenger).")]
+		public void OnPassengerEntered(Actor a, LuaFunction func)
+		{
+			GetScriptTriggers(a).RegisterCallback(Trigger.OnPassengerEntered, func, Context);
+		}
+
+		[Desc("Call a function for each passenger when it exits a transport. " +
+			"The callback function will be called as func(Actor transport, Actor passenger).")]
+		public void OnPassengerExited(Actor a, LuaFunction func)
+		{
+			GetScriptTriggers(a).RegisterCallback(Trigger.OnPassengerExited, func, Context);
+		}
+
 		[Desc("Call a function each tick that the actor is idle. " +
 			"The callback function will be called as func(Actor self).")]
 		public void OnIdle(Actor a, LuaFunction func)
diff --git a/OpenRA.Mods.Common/Scripting/ScriptTriggers.cs b/OpenRA.Mods.Common/Scripting/ScriptTriggers.cs
index 271435e7a1..ac820884b5 100644
--- a/OpenRA.Mods.Common/Scripting/ScriptTriggers.cs
+++ b/OpenRA.Mods.Common/Scripting/ScriptTriggers.cs
@@ -12,6 +12,7 @@
 using System;
 using System.Collections.Generic;
 using Eluant;
+using OpenRA.Mods.Common.Traits;
 using OpenRA.Scripting;
 using OpenRA.Traits;
 
@@ -21,7 +22,8 @@ namespace OpenRA.Mods.Common.Scripting
 	{
 		OnIdle, OnDamaged, OnKilled, OnProduction, OnOtherProduction, OnPlayerWon, OnPlayerLost,
 		OnObjectiveAdded, OnObjectiveCompleted, OnObjectiveFailed, OnCapture, OnInfiltrated,
-		OnAddedToWorld, OnRemovedFromWorld, OnDiscovered, OnPlayerDiscovered
+		OnAddedToWorld, OnRemovedFromWorld, OnDiscovered, OnPlayerDiscovered,
+		OnPassengerEntered, OnPassengerExited
 	}
 
 	[Desc("Allows map scripts to attach triggers to this actor via the Triggers global.")]
@@ -31,7 +33,8 @@ namespace OpenRA.Mods.Common.Scripting
 	}
 
 	public sealed class ScriptTriggers : INotifyIdle, INotifyDamage, INotifyKilled, INotifyProduction, INotifyOtherProduction,
-		INotifyObjectivesUpdated, INotifyCapture, INotifyInfiltrated, INotifyAddedToWorld, INotifyRemovedFromWorld, INotifyDiscovered, INotifyActorDisposing
+		INotifyObjectivesUpdated, INotifyCapture, INotifyInfiltrated, INotifyAddedToWorld, INotifyRemovedFromWorld, INotifyDiscovered, INotifyActorDisposing,
+		INotifyPassengerEntered, INotifyPassengerExited
 	{
 		readonly World world;
 		readonly Actor self;
@@ -421,6 +424,48 @@ namespace OpenRA.Mods.Common.Scripting
 			}
 		}
 
+		void INotifyPassengerEntered.OnPassengerEntered(Actor self, Actor passenger)
+		{
+			if (world.Disposing)
+				return;
+
+			foreach (var f in Triggerables(Trigger.OnPassengerEntered))
+			{
+				try
+				{
+					using (var trans = self.ToLuaValue(f.Context))
+					using (var pass = passenger.ToLuaValue(f.Context))
+						f.Function.Call(trans, pass).Dispose();
+				}
+				catch (Exception ex)
+				{
+					f.Context.FatalError(ex.Message);
+					return;
+				}
+			}
+		}
+
+		void INotifyPassengerExited.OnPassengerExited(Actor self, Actor passenger)
+		{
+			if (world.Disposing)
+				return;
+
+			foreach (var f in Triggerables(Trigger.OnPassengerExited))
+			{
+				try
+				{
+					using (var trans = self.ToLuaValue(f.Context))
+					using (var pass = passenger.ToLuaValue(f.Context))
+						f.Function.Call(trans, pass).Dispose();
+				}
+				catch (Exception ex)
+				{
+					f.Context.FatalError(ex.Message);
+					return;
+				}
+			}
+		}
+
 		public void Clear(Trigger trigger)
 		{
 			world.AddFrameEndTask(w =>
diff --git a/OpenRA.Mods.Common/Traits/Attack/AttackGarrisoned.cs b/OpenRA.Mods.Common/Traits/Attack/AttackGarrisoned.cs
index e4bef9512a..3243247c96 100644
--- a/OpenRA.Mods.Common/Traits/Attack/AttackGarrisoned.cs
+++ b/OpenRA.Mods.Common/Traits/Attack/AttackGarrisoned.cs
@@ -93,7 +93,7 @@ namespace OpenRA.Mods.Common.Traits
 			getArmaments = () => armaments;
 		}
 
-		public void PassengerEntered(Actor self, Actor passenger)
+		void INotifyPassengerEntered.OnPassengerEntered(Actor self, Actor passenger)
 		{
 			paxFacing.Add(passenger, passenger.Trait<IFacing>());
 			paxPos.Add(passenger, passenger.Trait<IPositionable>());
@@ -103,7 +103,7 @@ namespace OpenRA.Mods.Common.Traits
 				.Where(a => Info.Armaments.Contains(a.Info.Name)));
 		}
 
-		public void PassengerExited(Actor self, Actor passenger)
+		void INotifyPassengerExited.OnPassengerExited(Actor self, Actor passenger)
 		{
 			paxFacing.Remove(passenger);
 			paxPos.Remove(passenger);
diff --git a/OpenRA.Mods.Common/Traits/Cargo.cs b/OpenRA.Mods.Common/Traits/Cargo.cs
index e0895b0792..e319885829 100644
--- a/OpenRA.Mods.Common/Traits/Cargo.cs
+++ b/OpenRA.Mods.Common/Traits/Cargo.cs
@@ -246,7 +246,7 @@ namespace OpenRA.Mods.Common.Traits
 			SetPassengerFacing(a);
 
 			foreach (var npe in self.TraitsImplementing<INotifyPassengerExited>())
-				npe.PassengerExited(self, a);
+				npe.OnPassengerExited(self, a);
 
 			var p = a.Trait<Passenger>();
 			p.Transport = null;
@@ -311,7 +311,7 @@ namespace OpenRA.Mods.Common.Traits
 			}
 
 			foreach (var npe in self.TraitsImplementing<INotifyPassengerEntered>())
-				npe.PassengerEntered(self, a);
+				npe.OnPassengerEntered(self, a);
 
 			var p = a.Trait<Passenger>();
 			p.Transport = self;
@@ -406,7 +406,7 @@ namespace OpenRA.Mods.Common.Traits
 					c.Trait<Passenger>().Transport = self;
 
 					foreach (var npe in self.TraitsImplementing<INotifyPassengerEntered>())
-						npe.PassengerEntered(self, c);
+						npe.OnPassengerEntered(self, c);
 				}
 
 				initialized = true;
@@ -421,8 +421,11 @@ namespace OpenRA.Mods.Common.Traits
 		}
 	}
 
-	public interface INotifyPassengerEntered { void PassengerEntered(Actor self, Actor passenger); }
-	public interface INotifyPassengerExited { void PassengerExited(Actor self, Actor passenger); }
+	[RequireExplicitImplementation]
+	public interface INotifyPassengerEntered { void OnPassengerEntered(Actor self, Actor passenger); }
+
+	[RequireExplicitImplementation]
+	public interface INotifyPassengerExited { void OnPassengerExited(Actor self, Actor passenger); }
 
 	public class RuntimeCargoInit : IActorInit<Actor[]>, ISuppressInitExport
 	{