What is the purpose of an anti-lock braking system (ABS) in trucks?

The anti-lock braking system (ABS) in trucks is specifically designed to prevent wheel lock-up during hard braking. When a driver applies the brakes with significant force, particularly in slippery conditions, there is a risk that the wheels may stop spinning entirely, which can lead to a loss of steering control and increased stopping distances. ABS works by monitoring the speed of each wheel and automatically modulating brake pressure to prevent the wheels from locking. This allows the driver to maintain steering control while still achieving effective braking, ultimately enhancing safety.

The other options do not accurately reflect the function of the ABS. For instance, while faster acceleration and improved fuel efficiency are beneficial features sought in vehicles, they are not the objectives of the ABS. Similarly, reducing engine noise pertains to different aspects of vehicle design and operation, rather than braking performance. Thus, the primary purpose of ABS is clearly focused on maintaining wheel rotation and enhancing vehicle control during braking.