I’d love a source indicating it’s permissible to override the RWSL for emergency vehicles. In all training materials I’ve seen for pilots, it’s clear that an ATC clearance does NOT permit overriding the RWSL indication precisely for this scenario where ATC inadvertently provided a bad clearance. The direction to pilots is to query the controller to give them a chance for a second look and trap the error of the incorrect clearance. I linked the FAA page in another post where it provides direction to ground vehicles as well. Tomorrow I will have more time to research but this might be one of those things buried in a difficult to find Advisory Circular or something.