diff --git a/src/roadveh.h b/src/roadveh.h
--- a/src/roadveh.h
+++ b/src/roadveh.h
@@ -82,6 +82,7 @@ struct RoadVehicle : public Vehicle {
 	bool IsPrimaryVehicle() const { return IsRoadVehFront(this); }
 	bool HasFront() const { return true; }
 	int GetImage(Direction direction) const;
+	int GetDisplaySpeed() const { return this->cur_speed * 10 / 32; }
 	void Tick();
 };