Night driving vision — South Dakota Permit Test

Do not wear sunglasses or colored lenses when driving at night or on an overcast day; tinted lenses reduce vision.

In low light, dark lenses hide a person or deer at the road's edge until it is too late.

Do not wear sunglasses or colored lenses when driving at night or on an overcast day.

At night, add at least 1 second to your following distance.

In the dark you see a stopped car later, so the usual gap runs out before you can stop.

Increase the following distance by adding at least one additional second for night driving conditions and at least two additional seconds for driving on unfamiliar roadways at night.

On unfamiliar roads at night, add at least 2 seconds to your following distance.

On a dark road you do not know, a sharp curve or a stop comes up with no warning.

Increase the following distance by adding at least one additional second for night driving conditions and at least two additional seconds for driving on unfamiliar roadways at night.

At night, try to search well ahead of the headlight beams, looking for dark shapes on the roadway.

A dark animal or person just past your lights is in the road before your beams reach it.

Try to search well ahead of the headlight beams, looking for dark shapes on the roadway.

At night, glance occasionally to the right and left to find the edge of the pavement and hazards that may come from the sides.

Drivers who stare only ahead drift off the pavement edge or miss a deer coming in from the ditch.

Glance occasionally to the right and left to determine the location of the edge of the pavement and hazards that may come from the sides.

When does the manual say not to wear sunglasses while driving?

At night or on an overcast day. In low light, dark lenses hide a person or deer at the road's edge until it is too late. South Dakota Driver License Manual, p.66: “Do not wear sunglasses or colored lenses when driving at night or on an overcast day.”