Depends on the towns. Riding in the larger cities like Anchorage, Fairbanks, Juneau to name a few, no 4-wheelin in city limits. Laws differ from one small town to the next. I have seen 4-wheelers in many small towns up here. Not sure if they were legit or not though.i would love to load my 4 wheeler up and go camping for a couple of months,can you ride atv's freely on roads in alaska,like in small towns and stuff.
There are a lot of areas in the summer that you can go 4-wheeling in. Your best bet is to contact the Alaska department of fish and game and they could tell you the info you need or where to go to get it from.