Oooh fun thought exercise - My guess is about four cars equal the annoyance of a bus over the span of a year. Four randomized drivers will on average be slightly more annoying than an average year for one bus.<p>Taking into account:<p>1) Number of drivers removed from the roads by average annual bus use<p>2) Size of the vehicles<p>3) Random acts of annoyance<p>4) Dangers posed by each<p>To confess my bias - I&#x27;m a huge fan of mass transit and a bike commuter who touches his car maybe once a week, but curious how else one might model this.