What is the function of the anti-lock braking system (ABS) in a vehicle?

The anti-lock braking system (ABS) in a vehicle is designed specifically to prevent wheel lockup during hard braking. When a driver brakes suddenly, there is a risk that the wheels can stop turning, leading to a loss of traction. This situation can severely impair control of the vehicle, particularly in slippery conditions.

ABS helps maintain traction by rapidly cycling the brake pressure on and off. This allows the wheels to continue rotating while still applying enough braking force to slow the vehicle down effectively. As a result, drivers can maintain better control and steer around obstacles even during hard braking situations.

This function of avoiding wheel lockup is crucial for safety, especially in emergency situations, as it can significantly reduce stopping distances and the likelihood of skidding. Other options provided do not pertain to the primary purpose of ABS and focus instead on unrelated vehicle functions, such as fuel efficiency, tire pressure, and sound system enhancements.