The real trick is actually enforcement. Nobody obeys the rules because none of the rules are enforced. So sure, make the law that prohibits just certain vehicle

The real trick is actually enforcement. Nobody obeys the rules because none of the rules are enforced. So sure, make the law that prohibits just certain vehicles from doing a right on red. 100% guarantee you that the drivers of those cars will not obey the new rule and 100% guarantee you that cops won't enforce it.