Does anyone know where online i can find the laws governing license plate display on cycles in iowa? I've been searching for a half hour now and i can't find squat, just says i have to have one in the back. Says nothing about being lit or if it has to be horizontal. Iowa is VERY lenient in all it's other cycle laws so i'm guessing i can do whatever, i just like to know for sure. Don't even need turn signals in iowa but i can't find a thing about horizontal vs vertical.