Well, buses do run on schedules, and drivers are expected to meet those schedules if possible, I am sure. I doubt, however, that any company would advise their drivers take driving risks to meet the schedule... that would be self defeating and, frankly, crazy. But if there's a consistent problem, perhaps the scchedules need revision.

Note that too-slow schedules also create a problem: buses can't be early (or passengers will *really* complain -- about missing a bus they shouldn't have), so overly cautious schedules result in buses
sitting at each stop, or each timed stop, waiting for the schedule to catch up. This also annoys passengers -- and cyclists too! As a cyclist, I don't like passing buses that are at bus stops because (A) I never know when they are going to pull out again, and (B) if it's a narrow road, there can be some tricky traffic passing a bus.

I am sure there are bad bus drivers out there for the simple reason that there are bad, crazy, inconsiderate people everywhere. But in general, and -- I should add -- in Seattle, I have never had a problem with a bus driver.