--- a/src/roadveh.h	Sun Jul 01 19:11:47 2007 +0000
+++ b/src/roadveh.h	Sun Jul 01 19:24:54 2007 +0000
@@ -82,6 +82,7 @@
 	bool IsPrimaryVehicle() const { return IsRoadVehFront(this); }
 	bool HasFront() const { return true; }
 	int GetImage(Direction direction) const;
+	void Tick();
 };
 
 byte GetRoadVehLength(const Vehicle *v);