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GUIDELINES FOR THE APPLICATION OF PORTABLE TRAFFIC MANAGEMENT SYSTEMS AT WORK ZONES. IN: COMPENDIUM: PAPERS ON ADVANCED SURFACE TRANSPORTATION SYSTEMS, 2001.
| 题名： | GUIDELINES FOR THE APPLICATION OF PORTABLE TRAFFIC MANAGEMENT SYSTEMS AT WORK ZONES. IN: COMPENDIUM: PAPERS ON ADVANCED SURFACE TRANSPORTATION SYSTEMS, 2001. |
| 作者： | Fontaine-MD |
| 关键词： | Advanced-traffic-management-systems; Advanced-traveler-information-systems; Highway-safety; Portable-Traffic-Management-Systems; Traffic-congestion; Traffic-control; Traveler-information-and-communication-systems; Warning-devices; Work-zones |
| 摘要： | As the nation's transportation infrastructure continues to age, construction and maintenance zones have become increasingly common. Lane closures or changes in geometry reduce the capacity of roads that are already congested and this creates the potential for long queues on work zone approaches. On freeways, vehicles may approach the end of a slow moving queue at high speeds. If a location has limited sight distances, drivers may not have adequate advance warning and this could create an unsafe condition. Portable Traffic Management systems (PTMs) have been promoted as a means of improving safety and reducing congestion at locations where traditional traffic management centers do not exist. PTMs integrate portable changeable message signs, speed sensors, and highway advisory radio through a central control system that automatically determines appropriate messages for current traffic conditions. These systems are designed to provide real-time traffic management and traveler information with minimal human intervention. Manufacturers of these systems claim that they can warn drivers of downstream congestion, alert drivers of slower speeds ahead, and suggest alternative routes based on the prevailing conditions. Transportation agencies are often asked to make a decision on the installation of PTMS without the benefit of objective information on the performance of these systems. This paper describes how guidelines were developed for the use and placement of PTMs in work zones. These guidelines were generated based on a review of past applications of PTMS around the country. |
| 总页数： | 2001/08. pp1-54 |
| 报告类型： | 科技报告 |
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