Emergency　evacuation　planning　is　a　complex　procedure　that　includes　routing　evacuees,　identifying　shelters　and　exits,　and　designing　traffic　control.　The　evacuation　routing　models　are　vital　to　the　evacuation　planning　problem.　This　paper　presents　a　study　of　developing　an　integrated　emergency　evacuation　planning　system　with　dynamic　traffic　flow　model　within　the　state-of-the-art　Geographical　Information　System　(GIS),　namely,　ArcGIS　platform.　The　main　challenge　of　the　evacuee　routing　problem　lies　in　modeling　evacuation　traffic　flow　and　estimating　evacuation　time.　Since　transportation　infrastructure　is　a　limited　resource　both　in　terms　of　directional　accessibility　and　capacity,　it　is　worthy　of　well　planning　evacuation　routes　in　advance　so　as　to　ensure　a　safe　evacuee　routing　decision　and　efficient　utilization　of　the　involved　transportation　infrastructure.　The　objective　of　this　study　is　to　develop　an　integrated　approach　for　modeling　evacuation　traffic　flow　and　planning　evacuation　routes.　The　two　major　models　used　in　the　integrated　system,　a　time-discrete　traffic　flow　model　and　GIS-based　traffic　simulation　model　are　discussed.　The　time-discrete　traffic　flow　model　is　proposed　and　formulated　as　the　dynamic　capacitated　multi-commodities　flow　problem.　The　traffic　flow　model　produces　evacuees＇　flows　that　are　compatible　with　the　evacuation　travel　demand　and　routing　behaviors.　©　2006　IEEE.