The single most important component in any vehicle is the braking system, especially on heavy trucks. The tractor portion of a tractor-semi trailer rig may have ten or more valves controlling the air flow to the brakes. Teaches types of braking systems found on large trucks versus cars.

Illustrates how important maintaining the braking system is and the amount of force needed to stop a fully loaded truck within a short distance. The difference between the standard braking system and the ABS system is discussed.

Producer: Safety Source Productions

Runtime: 10 Minutes