If you don’t have ABS and you brake hard on an icy road, the force of your brakes will overcome the low traction with the road surface. This will cause the wheels to lock up, possibly resulting in a skid. Instead, use extremely light pressure on the brake to control your vehicle’s speed and help prevent the wheels from locking up. If your vehicle has ABS, feel free to brake hard if necessary. The ABS computer will keep your wheels from locking up.