What is the main benefit of an anti-lock braking system (ABS) in air brake systems?

Answer: B — Prevention of wheel lock-up during braking

The main benefit of an anti-lock braking system (ABS) in air brake systems is the prevention of wheel lock-up during braking. ABS allows the driver to maintain steering control under hard braking, especially on slippery surfaces. When a driver applies the brakes forcefully, the system automatically modulates the brake pressure to prevent the wheels from locking up. This increases the vehicle's stability and decreases stopping distances, allowing the driver to avoid obstacles and maintain control during emergency braking situations. While improved fuel economy, increased acceleration, and enhancement of tire lifespan are valuable aspects of vehicle performance, they are not direct benefits of the ABS technology. The primary function of ABS is focused on maximizing control and safety during braking events, particularly in adverse conditions.