It is permitted to park a bus operating on a service line (not for the purpose of picking up/dropping off passengers):
Pick an answer to test yourself
The correct answer: In accordance with what is recorded in the line licence, if so determined by "the Authority".
A bus operating on a service line may be parked, when it is not picking up or dropping off passengers, in accordance with what is recorded in the line licence, if the Authority so determined. The other options are not the correct answer.
This question appears in the theory test for license:D · bus





