I agree that there is no right to arbitrarily block traffic for prayer. But this does not require a ban on public prayer, it requires a law saying that one must

I agree that there is no right to arbitrarily block traffic for prayer. But this does not require a ban on public prayer, it requires a law saying that one must allow traffic to flow (which I suspect already exists), and a clarification that prayer is not an exception. Prayer need not be specifically targeted more than board games, or bike protests, or just parking in the middle of the street.