This is exactly the case. There's a small perimeter zone around the sensitive telescopes where unshielded/unapproved vehicles are prohibited, unless otherwise s

This is exactly the case. There's a small perimeter zone around the sensitive telescopes where unshielded/unapproved vehicles are prohibited, unless otherwise scheduled for some reason. This small area is the only place where these antique diesels are in use. They are in no way forcing the people in the nearby towns to use diesels or anything of the sort.