Q: Night driving is dangerous because...

Here is a quiz from DMV written test.

A-1) Some traffic signs are less visible at night.

A-2) More vehicles are on the road at night.

A-3) The distance we can see ahead is reduced.

A-4) Street lights tend to blur our vision.

The answer is..

A-3) The distance we can see ahead is reduced.

Please don't be too confident of yourself while you are driving at night.