Commuting　travel　is　the　main　part　of　urban　resident　travel,　and　bus　travel　accounts　for　the　highest　percentage　among　all　travel　modes.　The　development　and　application　of　intelligent　transport　systems　provide　the　necessary　data　foundation　for　bus　operation　monitoring　and　characteristic　analysis.　First,　this　paper　proposes　a　model　for　calculating　bus　travel　speeds　on　a　commuting　corridor.　Then,　a　method　of　analyzing　spatial-temporal　distribution　characteristics　is　established　to　extract　the　multi-dimensional　features　of　bus　travel　speed,　including　road　class,　time　period,　and　spatial　location.　Finally,　the　paper　takes　actual　bus　travel　speed　data　of　15　main　commuting　corridors　in　Beijing　as　a　case　study.　The　results　show　that,　with　bus　lanes,　bus　travel　speed　would　increase　18.2　percent.　The　bus　travel　speed　calculation　model　and　spatial-temporal　distribution　characteristic　analysis　method　reveal　the　micro-characteristics　of　bus　operation　on　commuting　corridors.　They　can　provide　support　to　make　and　implement　bus　optimization　plans.　©　2014　American　Society　of　Civil　Engineers.