Do out of state riders have to wear a helment if they are not required?

Out-of-state riders must adhere to the helmet laws of the state they are riding in, regardless of their home state's regulations. If the state mandates helmet use, then all riders, including those from out of state, are required to wear one. Conversely, if the state does not require helmets, out-of-state riders are not obligated to wear them either. Always check local laws before riding.