--- a/roadveh_cmd.c	Tue Aug 10 16:54:34 2004 +0000
+++ b/roadveh_cmd.c	Tue Aug 10 17:06:10 2004 +0000
@@ -1488,6 +1488,9 @@
 {
 	int i;
 
+	if (_patches.servint_roadveh == 0 && IS_HUMAN_PLAYER(v->owner))
+		return;
+
 	if (v->date_of_last_service + v->service_interval > _date)
 		return;