What is the primary function of an anti-lock braking system (ABS)?

The primary function of an anti-lock braking system (ABS) is to prevent the wheels from locking during hard braking. When a driver applies the brakes forcefully, especially on slippery surfaces, there is a risk that the wheels can lock up. If locking occurs, the vehicle can skid and lose steering control, making it difficult to avoid obstacles. ABS helps maintain steering control by allowing the wheels to continue rotating during braking, thus preventing a skid.

This system works by automatically modulating the brake pressure to each wheel, rapidly applying and releasing the brakes during hard stops. As a result, drivers can brake more effectively and maintain control of the vehicle, particularly in emergency situations. This safety feature is essential for improving vehicle handling and reducing the risk of accidents caused by loss of control during sudden stops.

The other choices pertain to benefits that may occur as a result of ABS but are not its primary function. For instance, while ABS can contribute to improved stopping distance in certain conditions, its main purpose is to prevent wheel lock-up.