When driving on a slippery surface such as snow or ice, what should you do before going downhill?

Answer: A — Shift to a low gear

When driving on slippery surfaces like snow or ice, shifting to a low gear before going downhill is a crucial practice because it helps maintain better control of the vehicle. By using a lower gear, the engine can assist in slowing down the vehicle through engine braking, which reduces reliance on the brakes. This is particularly important on slick surfaces where braking can cause the wheels to lock up and lead to skidding. Maintaining a controlled speed is essential to navigate down a hill safely in these conditions. It allows you to manage your momentum effectively without losing traction. This technique is a standard recommendation for driving in winter conditions, where accidents can occur due to loss of control.