Indiana > Laws and Regulations
Natural Gas Vehicle (NGV) Safety Requirement
An individual may not operate an NGV on a highway outside the corporate limits of a municipality from a half hour after sunset to a half hour before sunrise unless the vehicle carries at least three red electric lanterns or three portable red emergency reflectors. NGVs are prohibited from carrying a flare, fuse, or signal produced by flame. (Reference Indiana Code 9-19-5-6)