Author: E. D. Arnold
Publisher:
ISBN:
Category : Traffic congestion
Languages : en
Pages : 21
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Book Description
Congestion on our nation's highways, especially in urban areas, is a serious problem that is growing steadily worse. In Virginia, it is estimated that 28 percent of the daily vehicle miles of travel (VMT) occurring during peak hour traffic is congested (volume/service flow ratio> 0.75). Further, it is estimated that the cost of urban area congestion in Virginia will amount to more than $4 billion in the year 2000. Transportation professionals in Virginia need to be cognizant of and familiar with congestion-reducing measures so as to implement them at every opportunity. Accordingly, this research was conducted to (1) develop a categorical list of congestion- reducing measures, and (2) document the implementation of and experiences with these measures in Virginia. The latter included a subjective evaluation of each measure's effectiveness, cost, and barriers to implementation. The scope was limited to a literature review and a survey of transportation officials in Virginia. Based on the literature, 53 congestion-reducing measures were categorized by whether they manage the existing supply of transportation facilities, add to that supply, manage the existing transportation demand, or control demand growth. Experiences with these measures were documented from the survey of transportation professionals in Virginia. Conclusions were reached regarding the effectiveness, cost, and ease of implementation of individual measures as well as categories of measures.
Author: E. D. Arnold (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Book Description
Author:
Publisher:
ISBN:
Category : Transportation
Languages : en
Pages : 672
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Book Description
Author:
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 1006
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Book Description
Author:
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 486
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Book Description
Author: Sarah B. Medley
Publisher:
ISBN:
Category : Intelligent transportation systems
Languages : en
Pages : 50
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Book Description
The objectives of this study were to define a performance measure(s) that could be used to show congestion levels on critical corridors throughout Virginia and to develop a method to select and calculate performance measures to quantify congestion in a transportation system. Such measures could provide benchmarks or base values of congestion to aid in measuring changes in the performance of the highway system. A general method was developed to monitor congestion using performance measures and the intelligent transportation system information from the Virginia Smart Travel Lab. Two performance measures were selected for investigation: total delay and the buffer index. These performance measures were applied to evaluate congestion levels on the roadways in the Hampton Roads region of Virginia. Each measure shows a different dimension of congestion. In general, total delay is better suited for use by transportation professionals because it is given in units of vehicle-minutes and applies to all vehicles on a segment of roadway. The buffer index is suitable for use by the public because it addresses individual vehicle trip travel time and can be used for trip planning. The buffer index is also important to transportation professionals as a measure of variability. This research provides information on the changing state of congestion on selected corridors throughout Virginia. It will help the Virginia Department of Transportation determine the best ways to measure congestion and provide a way to compare congestion over periods of time to ascertain if the delay has grown worse or improved. This research can also help establish a benchmark for traveler delay on Virginia's roadways.
Author:
Publisher:
ISBN:
Category : Urban transportation
Languages : en
Pages : 468
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 560
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Book Description
Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 652
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Book Description
Author: Said Easa
Publisher:
ISBN:
Category : Architecture
Languages : en
Pages : 762
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Book Description
This collection contains 77 papers exploring transportation, land use, and air quality presented at a specialty conference, held in Portland, Oregon, May 17-20, 1998.
