Truck-mounted signboards -sometimes called hitch-mount signboards attached via a bracket to the truck roof or hitch and powered by a connection to the truck’s battery; warn the drivers against long vehicles, long loads, heavy truck traffic or road constructions in front.

Hitch mount signboards mainly mounted on the back of road sweepers, garbage trucks, water bowsers, or escort vehicles can show variable messages or directional arrows to guide the drivers.

All truck-mounted signboards have LED displays with unique or different lighting modes.