Traortation facilities are one of the main factors of development of countrie. Facilitation due to huge scale, needs considerable investment, therefore if there is not wise planning will cause to waste big part of national investment, one of the base necessity information for traort planner is OD-matrix , the information of this matrix collects by direct and indirect methods which the base of collection of flow traffic data from traortation network, therefore in recent years most of the traort researchers consider how to estimate and observe OD- matrix for data collection The aim of this project, is determination to how data collection in uncongested during the trip in a way that with using the information, can make unique OD-matrix. There is a hypothesis in investigation which is availability the suitable Path-id sensors for record the information of passengers and caused to issue math models for locating sensor in uncongested network. And also this investigation has been done without nominated hypothesis (availability the suitable Path-id sensors for record the information of passengers) ,then made some math model for locating strategic points of person in network Instead of sensor to collect traffic data and finally proposed the statistical method in order to improve the result of observe and estimate the OD-matrix. Above models applied on small traort network the Nguyen-Dupuis and analyzed the result , and also it is done on suburban Isfahan state traortation network which is huge and it shows us this method is actionable for big networks.
