From 1819a4218beb0b47af7dbff13162d0493b964168 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Sun, 27 Jun 2021 03:18:38 +0100
Subject: [PATCH] Clear signal speed restriction at game shutdown

---
 src/misc.cpp    | 1 +
 src/openttd.cpp | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/src/misc.cpp b/src/misc.cpp
index 809bc5f3b2..279df3f8cf 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -118,6 +118,7 @@ void InitializeGame(uint size_x, uint size_y, bool reset_date, bool reset_settin
 
 	FreeSignalPrograms();
 	FreeSignalDependencies();
+
 	ClearAllSignalSpeedRestrictions();
 
 	ClearZoningCaches();
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 9909c5e719..eceee5c07c 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -439,6 +439,9 @@ static void ShutdownGame()
 	FreeSignalPrograms();
 	FreeSignalDependencies();
 
+	extern void ClearAllSignalSpeedRestrictions();
+	ClearAllSignalSpeedRestrictions();
+
 	ClearZoningCaches();
 	ClearOrderDestinationRefcountMap();