The　weaving　segment　on　urban　expressway　is　the　bottleneck　for　the　traffic　operation,　which　impacts　on　the　capacity　of　expressway　and　the　side　road　of　expressway.　With　different　kinds　of　exit　and　entrance　combinations,　the　position　of　weaving　segment　is　changed.　This　paper　takes　entrance-exit　and　exit-entrance　modes　as　subject,　identifies　its　influence　on　expressway　and　the　side　road　of　expressway,　and　explores　its　applicability　with　different　merging　and　diverging＇s　ratios　with　the　designed　service　volume.　Firstly,　we　extract　the　traffic　parameters,　traffic　volume,　and　spot　speed,　from　the　video　recorded　on　the　Fourth　Ring　in　Beijing　using　the　software　of　traffic　analysis　and　the　vehicle　counter　coded　by　visual　basic.　Secondly,　with　the　geometric　characteristics　of　roadway,　this　paper　establishes　and　calibrates　the　VISSIM　simulation　model　and　extracts　the　volume,　spot　speed,　delay,　the　queue　length　at　the　exit　and　entrance,　and　the　travel　time　of　mainline　and　the　side　road　as　evolution　indices.　Finally,　this　study　establishes　DEA/AHP　model　to　explore　the　applicability　of　different　kinds　of　exit　and　entrance　combination　modes.　The　results　will　be　useful　for　exit　and　entrance　design　of　expressway.　©　2018　American　Society　of　Civil　Engineers　(ASCE).　All　rights　reserved.