Red Seal Truck and Transport Mechanic Exam Prep 2025 – Complete Practice Test

The Anti-lock Braking System (ABS) plays a crucial role in enhancing the safety and control of a truck during braking. Its primary function is to prevent wheel lockup, which occurs when the wheels stop turning during hard braking. When wheel lockup happens, a vehicle loses traction and steering control, which can lead to skidding and loss of directional stability.

The ABS achieves this by modulating the brake pressure applied to each wheel, allowing the wheels to continue rotating rather than locking up. This system continuously monitors the speed of each wheel and adjusts the brake pressure as necessary. By preventing wheel lockup, ABS enables drivers to maintain steering control during emergency stopping situations, which can significantly reduce the risk of accidents.

Other options, while related to vehicle performance, do not accurately describe the function of the ABS. For example, increasing braking power relates to the general capability of the braking system, not specifically to the ABS. The ABS does not directly improve engine performance or reduce fuel consumption but rather focuses on enhancing vehicle stability and safety during braking.