In Pyongyang, reliability isn't an issue on any service operated within the city.

Breakdowns, quite simply, don't happen, and when they do, there are series of protocols passengers must observe

Firstly, passengers are forbidden to comment on any aspect of the breakdown as breakdowns don't happen in North Korea.

Secondly, if a breakdown does occur, passengers are required to alight the vehicle and line up in the formation in which they were sitting. An official appears from the ministry of truth and transport to administer instructions and to make sure the first breakdown protocol is being followed.

Thirdly, as breakdowns don't happen in North Korea, passengers are to continue as if the breakdown hadn't happened. This involves taking instruction from the assigned official and marching, in the formation in which you were seated, along the roads and streets of Pyongyang, leaving the parade at the bus-stop in which you intended to alight.

It doesn't matter what happens to the vehicle once you've alighted and have started marching, as breakdowns don't happen in North Korea.

Perhaps such a system should be implemented in the North East to eliminate reliability issues. As you can see, it works well in North Korea.