DOT stands for Department of Transportation, which is a federal agency that sets standards for vehicle lighting.  A DOT certification is a test administered by the U.S. Federal Department of Transportation according to strict guidelines for verifying the safety of vehicles, drivers and vehicle accessories. DOT compliant means that the lighting meets section 108 requirements of the Federal Motor Vehicle Safety Standards (FMVSS). These standards regulate all automotive lighting, signaling, and reflective devices. The FMVSS are established and administered by the National Highway Traffic Safety Administration (NHTSA), an arm of the U.S. Department of Transportation.(DOT)

Sanmak’s 7’’ round and square LED headlights are in process of DOT application. Whole range of Sanmak’s LED headlights will be DOT compliant in the near future.