Why must trucks make a beeping noise when they are backing up?
This is a safety precaution mandated by law to address the problem of blind spots when a driver utilizes the vehicle side view mirrors. The beeping noise alerts anyone who may be behind the vehicle that it is moving. As a second precaution, we require that no truck is to back up at a work location without an individual spotting or directing the vehicle. This precaution is for the safety of the public as well as the workers.