The　design　of　phase　sequence　is　very　important　to　signal　control　timing.　The　research　embodied　in　this　paper　presents　a　new　method　of　designing　the　phase　sequence　of　the　signal　control,　based　on　the　conglomeration　of　pedestrians　and　bicycles　in　our　country.　Firstly,　we　present　a　new　definition　of　the　conglomeration　of　pedestrians　and　bicycles　at　the　first　phase　after　analyzing　the　two　phases　of　the　releasing　characteristics　of　the　signalized　intersection.　Next,　we　present　a　new　method　which　is　based　on　suppositional　grids　to　describe　the　conglomeration.　Then,　we　present　a　new　method　to　optimize　the　phase　sequence　based　on　the　time-space　resource　usage　of　the　intersection.　In　order　to　optimize　the　phase　sequence　quantitatively,　we　found　the　model　of　conflict　timing　between　the　conglomeration　and　the　vehicles.　As　for　estimating　the　optimal　phase　sequence,　we　used　the　model　of　conflict　timing.　Finally,　the　application　of　this　method　is　illustrated　with　the　signalized　intersection　of　Pingleyuan　in　Beijing.　Under　the　simulation,　the　method　gives　an　optimized　result.　©　2009　ASCE.