| Summary: | 碩士 === 國立交通大學 === 資訊科學與工程研究所 === 100 === In today's major cities, traffic congestion has been a severe problem. With the rapid development of information industry, intelligent transportation system (ITS) research is becoming more and more popular. Traffic signals control is getting well concerned among ITS. Traffic signals control's study is divided into two categories. One is fixed time-based traffic signals control, that is, arranges the red-green cycle for each traffic signal to solve the traffic congestion. The other is dynamic time-based traffic signals control, which allocates the traffic signals by evaluating traffic flows dynamically to cope with the varied traffic conditions.
In our thesis, we choose a dynamic time-based traffic signals control mechanism to study its behaviors and characteristics under various kind of traffic patterns, time intervals, and collection of car information to get well understanding on the mechanism. We also propose our improvements on this algorithm and verify our improvements using NCTUns network simulator. The results show that our improvements perform better than the original algorithm.
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