We have proposed the LONG (Longitudinal Oriented Normative time Gap compensation) lighting system that enhances the conspicuity of motorcycles by enhancing the ability of oncoming drivers to evaluate the distance and speed of a motorcycle. It has been shown that the motorcycle with this system has almost the same conspicuity as a car by measuring critical time gaps. We state that both the layout of headlights and their number doesn't influence the conspicuity of the motorcycle with this system in terms of sense of distance and speed although the layout of the lighting system influences the conspicuity.