Buses can also pass each other or not stop at every stop. If two of the same line's buses hit a stop at once, maybe the second rolls on by to the next stop unle

Buses can also pass each other or not stop at every stop. If two of the same line's buses hit a stop at once, maybe the second rolls on by to the next stop unless they have passengers to drop off? The example is a little too simplistic but does illustrate how rapidly the issue can appear.