What is the primary function of an Anti-locking Braking System (ABS)?

The primary function of an Anti-locking Braking System (ABS) is to prevent wheel lock-up during braking. This system is designed to maintain traction between the tires and the road surface while braking, especially in emergency situations. When a driver applies the brakes too hard, the wheels can lock up, leading to a loss of steering control and increased stopping distance. ABS helps to modulate the brake pressure, allowing the wheels to continue rotating while slowing down the vehicle. This enables drivers to maintain better control, improving overall safety during sudden stops or when braking on slippery surfaces.

The other options do not accurately reflect the main purpose of ABS. Enhancing acceleration, for example, is unrelated to braking systems and instead pertains to powertrain functions. Improving fuel efficiency involves different elements of vehicle design and operation, while the notion of automatically steering the vehicle is covered by other technologies, such as electronic stability control or advanced driver-assistance systems, rather than ABS itself.