Add setting for default road/tram types, to match default rail type setting

src/saveload/afterload.cpp

@@ -49,6 +49,7 @@
 #include "../newgrf.h"
 #include "../engine_func.h"
 #include "../rail_gui.h"
+#include "../road_gui.h"
 #include "../core/backup_type.hpp"
 #include "../core/mem_func.hpp"
 #include "../smallmap_gui.h"
@@ -3787,6 +3788,8 @@ bool AfterLoadGame()
 		}
 	}
 
+	InitializeRoadGUI();
+
 	/* This needs to be done after conversion. */
 	RebuildViewportKdtree();
 	ViewportMapBuildTunnelCache();