When visibility on the road is limited, the vehicle driver must:

1. ASlow down and adapt the speed to the visibility conditions and turn on the low beam.
2. BSlow down on a two-way road and drive as usual on a one-way road.
3. CAccelerate and turn on the parking lights, in order to avoid a collision with a vehicle driving behind.
4. DOperate high beam in order to enlarge the field of vision and warn oncoming traffic.

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