Which set of reasons does Article 37 provide for the competent authority to order a different direction of travel?

Correct answer

Safety, traffic flow or environmental reasons.

Safety, traffic flow or environmental reasons. The competent authority may establish this special traffic arrangement generally or for particular vehicles or users. Each reason can justify the measure; all three need not occur together. Drivers may not change the direction of travel on their own initiative. The answer must include the prescribed reasons rather than only one or excluding environmental grounds.