Collision Avoidance Assembly

A collision avoidance assembly for reducing collisions with a semitrailer includes a rear and side facing alert modules, which are mountable to a semitrailer, and a control module, which is mountable in a cab of a semitruck engaged to the semitrailer. Each alert module comprises a sensor, a camera, and a speaker. The sensors detect and the cameras image an approaching vehicle. The speaker and the control module provide audible alerts to a driver of the approaching vehicle and an operator of the semitrailer, respectively, so as to facilitate collision avoidance.