According to the law, what is the length limit of the bus in the following picture?

1. 12 meters.
2. 13.5 meters.
3. Correct answer: 15 meters.
4. 18.5 meters.

WhyThis is a three-axle bus, and its maximum is 15 meters. 13.5 m is the limit for a two-axle bus, 18.75 m for an articulated one.