IN THE UNITED STATES, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT ARE REGULATED BY THE US DEPARTMENT OF TRANSPORTATION (DOT) NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION’S FMVSS108 DOCUMENT. DOT / FMVSS108 APPLIES TO ALL VEHICLES USED ON PUBLIC STREETS IN THE UNITED STATES. DOT REGULATED PRODUCTS MUST COMPLY WITH DOT / FMVSS108 IN ORDER TO BE STREET LEGAL IN THE UNITED STATES. FOR EXAMPLE, HEADLIGHTS ARE REGULATED BY DOT / FMVSS108 AND MUST COMPLY WITH DOT / FMVSS108 TO BE STREET LEGAL IN THE USA. HOWEVER, FOG LIGHT BULBS ARE NOT REGULATED BY DOT / FMVSS108 AND ARE CONSIDERED STREET LEGAL IN THE USA.