The **anti-lock braking system (ABS)** is an active safety device that prevents the wheels from locking when braking. This is crucial because, by preventing the wheels from locking, the driver can **maintain control over the vehicle's steering** during braking.

- When the wheels do not lock, the driver can continue steering the vehicle in the desired direction, which is especially useful in emergency situations or on slippery roads.
- The ABS allows for safer and more controlled braking, as the driver can apply the brakes fully without losing the ability to maneuver.

Therefore, the ABS not only helps to stop the vehicle but also ensures that the driver can **control the steering** while braking, which is essential to avoid accidents.