Recommends placement of side turn signal lamps on trailers longer than 45 feet (13.72 meters) to help alert motorists of impending turns by tractors pulling long semitrailers.
April 2023 Edition
Remember Me
11/1/2022Updated Publications
6/29/2022New and Updated Publications
1/15/2026 » 1/18/2026TTMA 2026 January Convention Planning Meeting
2/3/2026 » 2/5/20262026 Train the Trainer: Ergonomics
