Originally Posted by
officialrecon17
The question is, is it allow by the community to wear a motocross helmet on a bicycle in the city streets?
I think it's more a question of practicality and safety on a warm day. there are full-face mountain bike helmets, and then there are moto helmets. I don't think those are the same thing. I would think that a moto helmet would be prohibitively heavy and hot for cycling, and it might limit your field of vision. there's no such thing as "too much protection" when it comes to protecting yourself against injury, but an actual moto helmet might be overkill for 99% of what any normal person does on any bicycle. I'm pretty sure I would wind up with heat stroke from the lack of ventilation or a neck injury from the weight long before I would have an opportunity to suffer a head injury in such a helmet.
so yes, you can wear whatever helmet you want, but don't expect many people to follow your example.