Am I sure? No. That's why I said I didn't know if they were waiting for dispatch, or something else. But I find it implausible that those sorts of delays would

Am I sure? No. That's why I said I didn't know if they were waiting for dispatch, or something else. But I find it implausible that those sorts of delays would cause nearly every departure to be 10+ minutes late at the start of the route, as they seem to in these plots. Also, I have a lot of direct experience with drivers on certain lines just sleeping in the back of their buses until past the departure time.