What is the primary purpose of antilock braking systems (ABS) in vehicles?

The primary purpose of antilock braking systems (ABS) in vehicles is to prevent wheel lock-up during braking. This technology allows for more effective steering and control while braking hard. When the driver applies the brakes, the ABS system monitors the speed of each wheel. If it detects that a wheel is about to lock up, it momentarily releases the brake pressure on that wheel, allowing it to continue rotating. This process enables the vehicle to maintain traction with the road surface, which helps prevent skidding and loss of control. By doing so, ABS significantly enhances safety during emergency braking situations.

The other options do not align with the main function of ABS. Increasing fuel efficiency, enhancing engine performance, and improving tire pressure are important aspects of vehicle operation, but they are unrelated to the braking control and safety enhancements provided by ABS. The focus of ABS is solely on the braking system and maintaining vehicle control.