The term you're looking for is bus bunching: https://en.wikipedia.org/wiki/Bus_bunching https://en.wikipedia.org/wiki/Bus_bunching Anecdotally, it seems to hap

The term you're looking for is bus bunching: https://en.wikipedia.org/wiki/Bus_bunching https://en.wikipedia.org/wiki/Bus_bunching Anecdotally, it seems to happen more on longer routes into a city center, and gets worse if there's traffic / bridge opens / etc. along the route.