What is the risk of riding a motorcycle in the dark?

1. The low temperatures to which the motorcycle is exposed.
2. Correct answer: The difficulty to assess the nature of the road and to detect obstacles in time.
3. The difficulty to see other vehicles that drive behind him only.
4. The low temperatures to which the rider is exposed.

WhyIn the dark it is hard to judge what the road ahead is like and to spot obstacles in time.