What is the safest practice when driving on icy roads?

Drive at normal speed but apply the brakes from time to time to check for grip.
Rely completely on the ABS or other advanced driver assistance systems.
Drive at a slower speed than usual using gentle acceleration and braking.
Drive in a low gear at all times using maximum acceleration.

Explantion: When driving on icy roads a driver should avoid harsh braking, steering and acceleration. This will help reduce the risk of skidding.

Managing Risk