When you drive in a new state, it’s good to look up whether the state is “permissive yellow” (e.g. California and Washington) vs “restrictive yellow” (e.g. Oregon) as well as whether it allows “right turn on red”.
Iowa
Michigan
Mississippi
Nebraska
New Jersey
Oregon
Virginia
Wisconsin
1: www.jarlstrom.com/PDF/Exhibit_1_FINAL_An_investigation_of_the_ITE_formula_and_its_use_R14.pdf
In practice, according to https://en.wikipedia.org/wiki/Turn_on_red#North_America everywhere in the US has had right turn on red unless otherwise signed since 1980. Except for New York City, apparently...
Thanks.