Yet a strategy of closing outlets opened during a period of overexpansion, introducing healthier options and improving customer service got McDonald's out of a very similar crisis a few years back.

Averages can include data for service startup or other events that might cause the Numbers to go far out of range for a brief period, thereby skewing results.

The big advantage of this system is that you don't have to break up the train into individual cars to do the work on one vehicle. The time saved reduces the period the train is out of service.