From 0f012198c4fd127174bb81f2c147d1f1f690a093 Mon Sep 17 00:00:00 2001
From: Darkvater <darkvater@openttd.org>
Date: Tue, 16 May 2006 22:11:15 +0000
Subject: [PATCH] (svn r4894) - Backport from trunk (r4750):   Trains could
 enter certain sloped rail tiles under bridges with incompatible rail type

---
 train_cmd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/train_cmd.c b/train_cmd.c
index 08dcd162f3..15da398eb0 100644
--- a/train_cmd.c
+++ b/train_cmd.c
@@ -2580,9 +2580,9 @@ static bool CheckCompatibleRail(const Vehicle *v, TileIndex tile)
 				uint tileh = GetTileSlope(tile, &height);
 
 				// correct Z position of a train going under a bridge on slopes
-				if (CorrectZ(tileh)) height += 8;
+				if (tileh != 0) height += TILE_HEIGHT;
 
-				if (v->z_pos != height) return true; // train is going over bridge
+				if (v->z_pos > height) return true; // train is going over bridge
 			}
 			break;