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It's well known that collecting traffic information by cell phone CEL-ID location technique-firstly get subscribers 'travel routine by analyzing and retrieving CELL-ID number uploaded by cell phone customers, then other necessary information (e.g. Origin-Destination Flow, the number of Residents and Jobs) gained after father technical processing. However, since all of these indicators are based on traffic analysis zone (TAZ) unit and restricted by the accuracy of CELL-ID location method and communication theory, the size of the traffic analysis zone has significant impact on the accuracy of indictors. For example, the relative error of the indicator will increase if the traffic analysis zone is divided too small. But if traffic analysis zone is divided too big, the trip distribution characteristic won't be presented clear. That's why this dissertation is to contribute a reasonable methodology of solving traffic analysis zone size based on CELL-ID location technique. © 2011 ASCE.
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