When driving down a long or steep hill, you should:

Check your mirrors for quickly approaching vehicles when you are driving down hills or mountains. Vehicles often build up speed while traveling down a steep grade. Be alert to large trucks and buses that may be going too fast.

• Check your mirrors for speeding traffic behind you.
• Assume all traffic is maintaining a consistent speed.
• Watch over your shoulder for traffic behind you.
• Hold down your brakes to control the speed of traffic.