You should always wear a helmet when riding one, 22 mph + falling or other cars is no joke! I've had to jump off at full speed before to avoid hitting things that would have made the board stop. Like riding a bike there is a risk, so you just have to be aware, try not to ride close to cars, and know how to fall safely. I think you can rent them at a few places--might want to look into that. Be warned though, once you try one you will want to buy it.