Download or read book Rural Roadway Capacity and Congestion written by J. L. Gattis and published by . This book was released on 1995 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the currently recommended saturation flow values used to determine the congestion level on a roadway are based on data collected in urban area traffic streams; therefore the resulting computational values reflect urban conditions. This project summarized existing research to offer alternative saturation flow rates that reflect rural conditions. It investigated a number of topics pertaining to rural area capacity and congestion. The issues considered were related to freeways, signalized intersections, two-lane road passing and climbing lanes, and access design. The project reviewed existing passing/climbing lane simulation packages, and examined certain volume, headway, and passing behaviors. The practice of assuming less than five second headways constitute delay was tested, and found to be questionable under certain circumstances. The performances of three different arterial street access designs in a small city were compared. The accident rates and travel time delays varied according to the level of access control present. The arterial with the most access control had a considerably lower accident rate than the other two arterials.
Download or read book Highway Capacity Manual written by National Research Council (U.S.). Highway Research Board. Committee on Highway Capacity and published by . This book was released on 1950 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relieving Highway Congestion Through Capacity Enhancements and Increased Efficiency written by United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Highways and Transit and published by . This book was released on 2002 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rural Roadway Capacity and Congestion written by J. L. Gattis and published by . This book was released on 1995 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many of the currently recommended saturation flow values used to determine the congestion level on a roadway are based on data collected in urban area traffic streams; therefore the resulting computational values reflect urban conditions. This project summarized existing research to offer alternative saturation flow rates that reflect rural conditions. It investigated a number of topics pertaining to rural area capacity and congestion. The issues considered were related to freeways, signalized intersections, two-lane road passing and climbing lanes, and access design. The project reviewed existing passing/climbing lane simulation packages, and examined certain volume, headway, and passing behaviors. The practice of assuming less than five second headways constitute delay was tested, and found to be questionable under certain circumstances. The performances of three different arterial street access designs in a small city were compared. The accident rates and travel time delays varied according to the level of access control present. The arterial with the most access control had a considerably lower accident rate than the other two arterials.
Download or read book Traffic Sheds Rural Highway Capacity and Growth Management written by Lane Kendig and published by . This book was released on 1999 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Even zoned rural communities can experience traffic network failure when development encroaches. Improving roads to meet demand is often financially impossible for rural counties. Implementing traffic sheds--a relatively new planning concept--offers one solution. Traffic shed analysis is worthy of consideration in counties where standard growth management techniques have been met with resistance and traffic congestion problems are starting to emerge. The traffic shed concept is, first, an analytical tool. If analysis indicates that traffic on existing roads is nearing or has exceeded available capacity, planners may use the results to persuade local officials to address growth issues. When used as a regulatory system, a traffic shed directs rural traffic in one directlon along designated county and township roads to major arterials leading to urban areas. Planners calculate road capacity, using standard transportation methodology, to implement a traffic shed system. The report is illustrated with maps, charts, and diagrams, and includes a detailed case study of traffic shed analysis and implementation in Williamson County, Tennessee.
Download or read book Highway Infrastructure written by and published by . This book was released on 2002 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Traffic Congestion and Reliability written by Cambridge Systematics and published by . This book was released on 2004 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Capacity and Traffic Congestion written by C. B. McGuire and published by . This book was released on 1952 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Surface Transportation Congestion written by William Mallett and published by . This book was released on 2008 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface transportation congestion most likely will be a major issue for Congress as it considers reauthorisation of the Safe, Accountable, Flexible, Efficient Transportation Equity Act -- A Legacy for Users (SAFETEA), P.L. 109-59, which is set to expire on 30 September 2009. By many accounts, congestion on the nation's road and railroad networks, at seaports and airports, and on some major transit systems is a significant problem for many transportation users, especially commuters, freight shippers, and carriers. Indeed, some observers believe congestion has already reached crisis proportions. Others are less worried, believing congestion to be a minor impediment to mobility, the by-product of prosperity and accessibility in economically vibrant places, or the unfortunate consequence of over reliance on cars and trucks that causes more important problems such as air pollution and urban sprawl. Trends underlying the demand for freight and passenger travel -- population and economic growth, the urban and regional distribution of homes and businesses, and international trade -- suggest that pressures on the transportation system are likely to grow substantially over the next 30 years. Although transportation congestion continues to grow and intensify, the problem is still geographically concentrated in major metropolitan areas, at international trade gateways, and on some intercity trade routes. Because of this geographical concentration, most places and people in America are not directly affected by transportation congestion. Consequently, in recent federal law, Congress, for the most-part, has allowed states and localities to decide the relative importance of congestion mitigation vis-a-vis other transportation priorities. This has been accompanied by a sizeable boost in funding for public transit and a more moderate boost in funding for traffic reduction measures as part of a patchwork of relatively modest federally directed congestion programs. Congress may decide to continue with funding flexibility in its reauthorisation of the surface transportation programs. States and localities that suffer major transportation congestion would be free to devote federal and local resources to congestion mitigation if they wish. Similarly, congestion-free locales would be able to focus on other transportation-related problems, such as connectivity, system access, safety, and economic development. Alternatively, Congress may want to more clearly establish congestion abatement as a national policy objective, given its economic development impact, and take a less flexible and, in other ways, more aggressive approach to congestion mitigation. Three basic elements that Congress may consider are (1) the overall level of transportation spending, (2) the prioritization of transportation spending, and (3) congestion pricing and other alternative ways to ration transportation resources with limited government spending. Congress also may want to consider the advantages and disadvantages of specific transportation congestion remedies. Hence, this book discusses the three basic types of congestion remedies proposed by engineers and planners: adding new capacity, operating the existing capacity more efficiently, and managing demand.
Download or read book Second International Symposium on Highway Capacity written by Rahmi Akçelik and published by . This book was released on 1994 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Two lane Two way Rural Highway Capacity written by Carroll J. Messer and published by . This book was released on 1983 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Traffic Management Strategies for Merge Areas in Rural Interstate Work Zones written by and published by . This book was released on 1999 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Iowa Department of Transportation (Iowa DOT) sponsored the Center for Transportation Research and Education (CTRE) conduct of research on the capacity and driver merge behavior at Interstate work zone merge areas. The principle goal of this research is to determine the traffic capacity at work zone locations where two lanes of traffic are reduced to one (lane closure). Reducing two traffic lanes to one in each direction is the typical method of channeling traffic into a work zone on Iowa's rural Interstate system. When traffic volumes exceed the capacity of these merge points, the resulting congestion can lead to the formation of queues, which result in delays and increases the potential for traffic crashes. Successful implementation of work zone improvements at locations where congestion is expected will provide a benefit to motorists through reduced delays and increased safety. The research project was conducted in four phases: a literature review, the collection of traffic data at work zone merge areas, the analysis of this data, and the development of a computer simulation tool to model traffic at merge areas.
Download or read book Congestion on Virginia s Urban Highways written by E. D. Arnold and published by . This book was released on 1988 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Congestion on our nation's highways, most commonly found in urban areas, is a serious problem that is growing steadily worse. While Virginia is predominantly rural, there are few Virginians who have not experienced congestion at some time in their travels throughout the state. The magnitude of this congestion is not known. Accordingly, statewide congestion statistics are needed in order to define and evaluate, the problem and to establish the level of effort needed to solve it. Based on a procedure developed by the Federal Highway Administration using High-Performance Monitoring System data, this report documents statewide recurring congestion on Virginia's interstate roadways. Estimates of nonrecurring congestion, congestion in the year 2000, and congestion on other urban roadways are also provided.
Download or read book Road Traffic Congestion A Concise Guide written by John C. Falcocchio and published by Springer. This book was released on 2015-03-13 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on road traffic congestion in cities and suburbs describes congestion problems and shows how they can be relieved. The first part (Chapters 1 - 3) shows how congestion reflects transportation technologies and settlement patterns. The second part (Chapters 4 - 13) describes the causes, characteristics, and consequences of congestion. The third part (Chapters 14 - 23) presents various relief strategies - including supply adaptation and demand mitigation - for nonrecurring and recurring congestion. The last part (Chapter 24) gives general guidelines for congestion relief and provides a general outlook for the future. The book will be useful for a wide audience - including students, practitioners and researchers in a variety of professional endeavors: traffic engineers, transportation planners, public transport specialists, city planners, public administrators, and private enterprises that depend on transportation for their activities.
Download or read book Congestion Mitigation Resources and Strategies for Arizona s State Highway System Research goals activities and conclusions written by Nayan S. Amin and published by . This book was released on 2002 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Work Zone Capacity Estimation Using Field Data from Kansas written by Logan A. Ortiz and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Although extensive research has been conducted on urban freeway capacity estimation methods, minimal research has been carried out for rural highway sections, especially sections within work zones. This study filled that void for rural highways in Kansas. This study estimated capacity of rural highway work zones in Kansas. Six work zone locations were selected. An average of six days' worth of field data was collected, from mid-October 2013 to late November 2013, at each of these work zone sites. Two capacity estimation methods were utilized, including the Maximum Observed 15-minute Flow Rate Method and the Platooning Method divided into 15-minute intervals. The Maximum Observed 15-minute Flow Rate Method provided an average capacity of 1469 passenger cars per hour per lane (pcphpl) with a standard deviation of 141 pcphpl, while the Platooning Method provided a maximum average capacity of 1195 pcphpl and a standard deviation of 28 pcphpl. Based on observed data and analysis carried out in this study, the recommended capacity to be used is 1500 pcphpl when designing work zones for rural highways in Kansas. This research provides the proposed standard value of rural highway work zone capacities so engineers and city planners can effectively mitigate congestion that would have otherwise occurred due to impeding construction/maintenance.
Download or read book Economic Fundamentals of Road Pricing written by Timothy Doe-Kwong Hau and published by World Bank Publications. This book was released on 1992 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
