By the bus&#x27;s frequent stops and lumbering acceleration, I&#x27;d estimate it cuts the average speed behind it by at least half. Unclear how far down the road this effect travels, but a significant distance. I&#x27;ve also yet to see a bus stop that doesn&#x27;t obstruct the bike lane, so apply this effect to bikes as well.<p>Sometimes (though rarely) the bus stop is such that the bus can pull out of the traffic lane and become less of an obstruction, but even then, right turns are delayed significantly.<p>I don&#x27;t mind this when I see a full bus, because I know that many private cars would slow down traffic at least as much. But damn is it annoying when the bus has 3 people on it (as is usually the case in my non-transit-oriented city).