Abstract: An indicator or lighting system for bicycles or other vehicles. The indicator system includes a turn signal system, a hazard flash system and a running light system employed in conjunction with a timer and utilizing a convenient battery pack as well as a pair of light and cross bar assemblies. each of the turn signal, hazard flash and running light system employs a double-throw double-pole switch having a pair of movable contacts both ganged together to move in unison from respective neutral positions to either a left hand or right hand position. In one active position, the running light switch initiates steady illumination of the lights to provide a running light system. In the other active position, the running light switch allows activation of the hazard flash or turn signal system.