What is the most important thing a motorcyclist should check before entering an intersection?

1. That no vehicle is driving in parallel to him at the same speed.
2. He should calculate the time needed to cross the intersection at his current speed.
3. In an intersection with traffic lights there is no need to check anything.
4. Correct answer: That the intersection is clear of traffic that might endanger him.

WhyBefore an intersection a motorcyclist first checks that there is no traffic that could endanger them. Even on green.