What safety feature is found in most modern air brake systems?

The anti-lock braking system (ABS) is a safety feature commonly found in modern air brake systems. This technology enhances vehicle control and helps to prevent wheel lock-up during hard braking. When the brakes are applied suddenly, the ABS system modulates the brake pressure to each wheel, preventing the wheels from fully locking. This allows the driver to maintain steering control while stopping, significantly reducing the risk of skidding or losing traction.

The importance of ABS lies in its ability to provide safer stopping in slippery conditions, such as wet or icy roads. By preventing wheel lock-up, ABS enables drivers to brake more effectively while maneuvering, which can be crucial in emergency situations. This technology has been widely adopted in various vehicles, particularly in larger trucks and commercial vehicles that utilize air brakes.

Other options, while relevant to various braking technologies, do not specifically describe a feature inherent to modern air brake systems. For example, automatic emergency brakes and electronic brake force distribution are also safety advancements, but they are not commonly integrated into every air brake setup. Hydraulic brake assist is more typical of hydraulic brake systems rather than air brake systems, further delineating ABS as the primary safety feature identified in this context.