Lothian buses regulate as well, but only to maintain published timetables (if a bus is running fast, it will sit at a stop until it's back on schedule) The usu

Lothian buses regulate as well, but only to maintain published timetables (if a bus is running fast, it will sit at a stop until it's back on schedule) The usual clumping is multiple buses on separate routes arriving at one, since they enforce strict stacking (can disembark in the approach to the stop but can only embark passengers at the stop sign)