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Adaptive Traffic Control Systems: Domestic and Foreign State of Practice. NCHRP Synthesis 403
| 题名： | Adaptive Traffic Control Systems: Domestic and Foreign State of Practice. NCHRP Synthesis 403 |
| 作者： | empty |
| 关键词： | Traffic signal optimization##Adaptive traffic control##Traffic management##Traffic simulation##Traffic control##Traffic signal timing##Urban areas##Interchanges##Adaptive Traffic Control Systems(ATCSs)## |
| 摘要： | Adaptive Traffic Control Systems (ATCSs) adjust, in real time, signal timings based on the current traffic conditions, demand, and system capacity. The systems require extensive surveillance, historically in the form of pavement loop detectors, and infrastructure that allows for communication with the central and/or local controllers. Although there are at least 25 ATCS deployments in the United States, these systems may not be well understood by many traffic signal practitioners in the country. Their operational benefits have been demonstrated, but there are still some reservations among individuals in the traffic signal community. These systems are considered expensive and complex and they require high maintenance of detectors and communications. Although a few short surveys have been done, there has been no comprehensive survey that has addressed major problems with ATCS implementations. The study methodology included three sequential efforts. The first focused on the selection of ATCSs, which are typically deployed in the United States (and worldwide), and identification of ATCS agencies that could be interviewed. The next effort was to conduct a literature review and gather as much information as possible about ATCS operations and deployments from previous studies. Finally, two electronic surveys were conducted: a shorter e-mail survey for ATCS vendors and a longer web-based survey for ATCS users. Responses were obtained from 34 of 42 agencies in North America, an 81% response rate. Also, responses were obtained from 11 agencies in other countries. Municipal and county traffic operations agencies were the primary contributors among the 45 agencies that responded to the survey. |
| 总页数： | 114 |
| 报告类型： | 科技报告 |
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