Layout And Planning Study On Traffic Survey Observation Station Of Freeway

The highway traffic survey is a foundational work of the highway construction and management, it has the important support and the safeguard function to promote the highway traffic enterprise's healthy development, and provide the essential data for the highway planning, the construction, the management maintenance and the road informationization. The dissertation depends on the Ministry of Communications plans the research institute project "National High speed Highway network Volume of traffic To investigate Observation point Layout Plan", investigates the observation point layout plan method in view of the highway volume of traffic to conduct the research, has the important theory significance and the use value.This article in summarizes the domestic and foreign highway traffic survey historical development and in the research present situation foundation, has analyzed the traffic survey existence question, according to the user's needs analysis's result, to carry on the classification to the function of the observation station; Then had determined the volume of traffic observation station build's guiding principle and the basic principle, in the use road network plan's total quantity control method and handed over the throughflow state estimation model to propose each kind of observation station's build method, and has given the concrete job step; Finally abase on the foundation of having been analyzed in fully each kind of assessment method, the synthetic evaluation indicator system of the traffic observation station has been formulated, had determined the analytic hierarchy process union fuzzy appraisal's quality synthetic evaluation method carries on the quality synthetic evaluation to the traffic observation station, and has carried on the example application.The research indicated that this article obtains two kinds of layout method of the observation station: the first kind stand's build according to the road section accumulation importance's concept, has solved the present situation volume of traffic data imperfect problem; The second kind stands take the throughflow theory as the foundation, utilizate the throughflow condition appraisal model to carry on the build. This method is simple and easy to use, and having the very strong feasibility; Introduces t the importance concept of the traffic observation station for the first time into the layout plan, it is an exploration in lacks the historical volume of traffic observation data in the situation to carry on observation station layout.