FMVSS 108 Trailer Light Requirements Guide
Standard 108 of the Federal Motor Vehicle Safety Standards (FMVSS) regulates lighting, signaling, and reflective devices required for all motor vehicles in the United States, and it is complicated. We decided to break this information down so that making your trailer FMVSS 108 compliant is easy. Find your trailer’s length, width, and Gross Vehicle Weight Rating (GVWR), and you're ready to start!