well, i live in TX, so i can't be too much help. But, i know that most states allow up to 49.9cc engines on something like a bicycle. You can't go onto roads that you can't match people's speeds (i.e., the freeway). So these are good for around-the-town,to-and-from school/work. If you go electric, you are legally IN THE CLEAR, no cop can ticket you unless you're speeding (it'll be funny one day even if you do, because you can tell all your friends about how you got ticketed speeding on a bicycle). If you stay gas though, anything too powerful like 250cc, a cop may ticket you. most don't care and as long as it looks like a bike with a weak engine, they're ok. don't risk it, go with a 48 cc and call your local DOT to see if it has to be registered as a moped. but registering means you need a license, plates, insurance, so you lose the whole point of doing it. around here though, cops don't want people too slow around here. if you end up not being able to go fast enough, then they might pull you over. if you can go fast, they're happy.