To　determinate　the　combined　effect　of　bus　bay　stops　near　access　points　on　the　expressway　capacity,　a　new　theoretical　approach　is　developed　on　the　basis　of　gap　acceptance　theory　and　queuing　theory.　According　to　the　location　between　the　bus　stop　and　the　access　upstream　or　downstream,　the　capacity　models　on　the　expressway　are　developed　for　four　cases.　The　results　show　that　there　are　no　significant　differences　in　the　capacity　among　four　cases　when　the　bus　arrival　rate　is　less　than　60　veh/h　and　the　car　volume　at　the　entrance　and　exit　is　less　than　200　pcu/h.　As　the　bus　arrival　rate　and　the　car　volume　at　the　entrance　and　exit　increase,　the　bus　stops　at　downstream　of　an　entrance　and　upstream　of　an　exit　have　remarkable　effect　on　the　capacity.　The　increasing　of　berth　number　of　the　bus　stop　has　a　positive　effect　on　the　capacities　of　four　cases.　Copyright　©　2015　Editorial　Department　of　Journal　of　Donghua　University.　All　rights　reserved.