Signal Timing Based on Traffic
| 项目名称： | Signal Timing Based on Traffic |
| 摘要： | Current practice on signal timing and coordination is to develop and operate a limited number of timing plans throughout the year and time of day. For example, it is common that coordination plans are developed only for and based on weekday a.m., midday, p.m., off-peak and weekend peak periods. Timing plans are developed in a way that would fit the specific traffic pattern and speed profile during these periods. During the remaining time periods, signals are either operate with a fully-actuated mode or a coordination plan selected based on an engineer's judgment. While the majority of the motorists can benefit from signal coordination during the specific time periods that the coordination plans are developed for, others may experience unsatisfactory travel when no coordination plan is running or the timing plan does not fit the specific traffic pattern. Under inclement weather conditions such as snow, travel speeds would be significantly lower, thus the expected progression would not be achieved. One of the reasons for operating with such limited number of coordination plans is due to resource constraints on signal timing developments. The other reason is perhaps due to limitations of the signal control hardware which only handles a certain number of timing plans. Furthermore, it is unknown whether there will actually be any benefit or whether the benefit will outweigh the cost if additional timing plans are developed and implemented. This proposed research will specifically address these signal timing related issues. Another issue related to signal timing practice is methodologies for determining yellow change and all-red clearance intervals. Current guidelines were developed primarily based on through movements. Left-turn movements have very different characteristics so the current guidelines need to be evaluated for its applicability to left-turn movements. |
| 状态： | Active |
| 资金： | 61695.00 |
| 资助组织： | Research and Innovative Technology Administration<==>Nevada Department of Transportation |
| 执行机构： | Transportation Research Center<==>University of Nevada, Reno |
| 开始时间： | 20110601 |
| 实际结束时间： | 20120630 |
| 主题领域： | Data and Information Technology；Highways；Operations and Traffic Management |
相关文献
- Signal Timing Manual: Development of the Third Edition
- Signal Timing Strategies for Non-Motorized Users
- Revision of the Traffic Signal Design Guide and Timing Manual
- Comparing and Combining Existing and Emerging Data Collection and Modeling Strategies in Support of Signal Control Optimization and Management
- Evaluation of Traffic Signal Communication
- Leveraging Connected Vehicles to Enhance Traffic Responsive Traffic Signal Control
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