--- a/rail.h	Sun Jul 03 11:31:03 2005 +0000
+++ b/rail.h	Sun Jul 03 13:02:54 2005 +0000
@@ -441,7 +441,7 @@
  * The given trackdir is used when there are (could be) multiple rail types on
  * one tile.
  */
-RailType GetTileRailType(TileIndex tile, byte trackdir);
+RailType GetTileRailType(TileIndex tile, Trackdir trackdir);
 
 /**
  * Returns whether the given tile is a level crossing.
@@ -472,4 +472,17 @@
 	return INVALID_TRANSPORT;
 }
 
+/**
+ * Checks if an engine of the given RailType can drive on a tile with a given
+ * RailType. This would normally just be an equality check, but for electric
+ * rails (which also support non-electric engines).
+ * @return Whether the engine can drive on this tile.
+ * @param  enginetype The RailType of the engine we are considering.
+ * @param  tiletype   The RailType of the tile we are considering.
+ */
+static inline bool IsCompatibleRail(RailType enginetype, RailType tiletype)
+{
+	return enginetype == tiletype;
+}
+
 #endif // RAIL_H