When visibility is poor:

1. AStick close to the vehicle driving in front of you in order to make use of its lights.
2. BDrive at the usual speed, but be alert and ready at all times for an emergency stop.
3. CSlow down your driving speed and keep a larger gap than usual from the vehicle ahead.
4. DKeep to the right of the road and accelerate the vehicle, until visibility clears.

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