Signal Control at Isolated Intersection with Dynamic Timing Computation Strategy

• Main Authors: Wan-Lun Chang, 張菀倫
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/79089249415594449541

碩士 === 國立中央大學 === 土木工程研究所 === 91 === In recent years, because of the forming of the city industrialization and urbanization, causes the fast growth in automobiles and motorcycles, makes the original capacity for the metropolitan become saturated, and presents the situation of traffic jam. However, if we want to improve the traffic effectively, the speedily and immediately developable approach is to raise the signal control except to raise the road. The dynamic timing computation strategy collects the traffic flow by detector, and sends back to the control center after a while. Through the procedure of the flow prediction, it could be used as the input data for the software of on-line signal timing analysis. And then generates the new signal timing plan after its fast operation, it is also send to the local controller and executed in the next timing control. However, in order to acquire the traffic flow immediately, the detector is playing a very important role. Hence, is the location of the detector suitable? That will affect the utility of the information from the detector, and also may affect the success or failure of the signal timing plan. In this paper we make an isolated intersection as an example. In order to acquire the best signal timing plan, we simulate the structure of the dynamic timing computation strategy, and we use the C++ language to build several kinds of dynamic timing computation models in different sites of the detectors. Then we compare the performance of execution, and evaluate the outcome. Moreover, we utilize the different flow situation, in order to find out the suitable sites of the detectors. We accomplish this paper by using the fixed timing and the different sites of the detectors in dynamic timing computation strategy. We expect the conclusion and the suggestions could be applied.