What is the best way to stop quickly on a wet or icy roadway?

Pumping the brake is a widely recommended technique for stopping quickly on wet or icy roadways because it helps to maintain control of the vehicle while reducing the risk of skidding. When the road conditions are slippery, applying the brakes gently and intermittently allows the tires to grip the surface without locking up. This is crucial because when brakes are applied too forcefully on slippery surfaces, it can cause the wheels to lose traction, leading to a loss of steering control.

In contrast, engaging the emergency brake can lead to a sudden stop, increasing the likelihood of skidding or spinning out in slippery conditions. Turning off the ignition is highly unsafe, as it can disable vital vehicle systems necessary for control, such as power steering and brakes. Steering into the skid involves correcting the vehicle's direction during a sideways slide, but it does not actively assist in stopping the vehicle and can only be used once a skid is already occurring. Therefore, pumping the brake not only aids in stopping effectively but also ensures the driver maintains control, making it the best approach in such conditions.