From b3a8dd44e44a97b844425d3246ce54c489e935b0 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Thu, 22 Sep 2022 18:12:24 +0100
Subject: [PATCH] Fix crash when removing routing restriction with reserve
 through from tunnel/bridge

---
 src/tracerestrict.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/tracerestrict.cpp b/src/tracerestrict.cpp
index a3fd6311ea..903d400d9c 100644
--- a/src/tracerestrict.cpp
+++ b/src/tracerestrict.cpp
@@ -1416,7 +1416,9 @@ bool TraceRestrictRemoveProgramMapping(TraceRestrictRefId ref)
 			TraceRestrictRemoveProgramMapping(const_cast<const TraceRestrictProgram *>(prog)->GetRefIdsPtr()[0]);
 		}
 
-		if (update_reserve_through) UpdateSignalReserveThroughBit(tile, track, true);
+		if (update_reserve_through && IsTileType(tile, MP_RAILWAY)) {
+			UpdateSignalReserveThroughBit(tile, track, true);
+		}
 		return true;
 	} else {
 		return false;