Nevada October 1, 2019 Moped & Trimobile Helmet Requirement Sept 30, 2019 13:46:49 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by tortoise2 on Sept 30, 2019 13:46:49 GMT -5 SB408 requiring the driver and passenger on a trimobile or a moped to wear protective headgear is effective October 1, 2019.