How many passengers is a bus driver allowed to carry?

1. Up to 50 passengers sitting and 10 standing.
2. Up to 70 passengers.
3. Correct answer: According to the number indicated in the bus registration documents (if such a number is indeed indicated).
4. Up to 70 children.

WhyThe number of passengers on a bus is what its registration documents state. There are no universal figures like 70 children or 50 seated plus 10 standing.