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Providing a Highway System with Reliable Travel Times. Study 3. Reliability.
| 题名： | Providing a Highway System with Reliable Travel Times. Study 3. Reliability. |
| 关键词： | TRAFFIC CONGESTION; TRANSPORTATION RESEARCH; TRAVEL TIME |
| 摘要： | Traffic congestion is a growing problem for the transportation system. The need for a reliable transportation system is seen every day. It is apparent that the morning and evening rush hours could be termed the stop-and-go several hours in most large cities. The problem is evident when business travelers have to allow an extra 15 to 30 minutes of travel time to go to a meeting in the middle of the day because they cannot rely on free-flow conditions. Freight transporters who avoid the peak period or allow more time or dedicate more vehicles to accomplish similar tasks as previous years also feel the effect. Travel time unreliability is the direct result of the variable and often unpredictable events that occur in the highway environment. Not only is the congestion experienced by travelers on an average day growing, but the impacts of several traffic events cause congestion to vary substantially from day-to-day. These events include incidents, adverse weather, work zones, special events, fluctuations in daily travel demand, and poorly coordinated traffic signals. The congestion caused by unreliable transportation events is roughly as large as the congestion caused by insufficient highway capacity. The Reliability Research Plan outlined in this report will lead to reduction in congestion and an improvement in the ability of commuters, shippers, and travelers to predict their trip time and reduce the amount of variation in their expected travel time. |
| 报告类型： | 科技报告 |
相关文献
- Providing a Highway System with Reliable Travel Times. Study 3. Reliability. Final rept.
- Establishing Monitoring Programs for Travel Time Reliability. SHRP 2 Reliability Report L02.
- Establishing Monitoring Programs for Travel Time Reliability. SHRP 2 Reliability Report L02
- Measurement and Evaluation of Transit Travel Time Reliability.
- Evaluation of Intelligent Transportation System Deployments for Work Zone Operations. Final Report.
- Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies. The Second Strategic Highway Research Program.
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