WorldCat Identities

Washington State Transportation Center

Overview
Works: 781 works in 1,252 publications in 1 language and 6,919 library holdings
Genres: Software 
Classifications: TE7, 625.7 S
Publication Timeline
Key
Publications about Washington State Transportation Center Publications about Washington State Transportation Center
Publications by Washington State Transportation Center Publications by Washington State Transportation Center
Most widely held works about Washington State Transportation Center
 
Most widely held works by Washington State Transportation Center
Traffic data collection, analysis, and forecasting for mechanistic pavement design by Cambridge Systematics ( Book )
5 editions published between 2004 and 2005 in English and held by 133 WorldCat member libraries worldwide
An evaluation of granular overlays in Washington State final technical report by Daniel John O'Neil ( Book )
3 editions published in 1992 in English and held by 99 WorldCat member libraries worldwide
This study examined granular overlays by using three different techniques. First, previous research on the behavior of confined crushed rock layers was studied. Through these studies, information was sought concerning the stiffnesses that have been found in crushed rock layers, what can be done to improve the crushed rock layer, and the problems that have been encountered in working with confined crushed rock layers. Next, the usable life of the granular overlay was compared with that of other types of pavement resurfacing, including asphalt concrete (AC) overlays and BST. Finally, the granular overlays were tested to determine their properties and to measure the effect of different designs on their performance
Guidelines for spring highway use restrictions ( Book )
4 editions published in 1987 in English and held by 65 WorldCat member libraries worldwide
This report is a supplement to the video presentation "Guidelines for Spring Highway Use Restrictions." Air temperature based criteria (thawing index) were developed which can be used to estimate when to apply and remove load restrictions. This supplement provides guidelines for where to apply load restrictions, the amount of the load restrictions to apply and when to apply and remove load restrictions. Example calculations and a blank data collection sheet are also included
Analysis and design of wire mesh/cable net slope protection ( Book )
3 editions published between 2005 and 2008 in English and held by 52 WorldCat member libraries worldwide
This report summarizes research that characterized existing performance, tested critical system components, back-analyzed system failures, evaluated typical loading conditions, and developed analytical models to refine engineering design of wire mesh/cable net slope protection. Finally, guidelines were developed to support the design of these systems for a variety of loading conditions. Specifically, the report provides design guidance on site suitability, characterizing external loads, fabric selection, anchorage requirements, and system detailing
AVL-equipped vehicles as speed probes : (final phase) by Daniel J Dailey ( Book )
5 editions published between 2003 and 2005 in English and held by 43 WorldCat member libraries worldwide
ITS Backbone by Daniel J Dailey ( Book )
5 editions published between 1996 and 2007 in English and held by 40 WorldCat member libraries worldwide
Quantifying incident-induced travel delays on freeways using traffic sensor data by Yinhai Wang ( Book )
8 editions published between 2008 and 2011 in English and held by 37 WorldCat member libraries worldwide
Traffic incidents cause approximately 50 percent of freeway congestion in metropolitan areas, resulting in extra travel time and fuel cost. Quantifying incident-induced delay (IID) will help people better understand the real costs of incidents, maximize the benefit-to-cost-ratio of investments in incident remedy actions, and facilitate the development of active traffic management and integrated corridor management strategies. Currently, a number of algorithms are available for IID quantification. However, these algorithms were developed with certain theoretical assumptions that are difficult to meet in real-world applications. Furthermore, they have only been applied to simulated cases and have not been sufficiently verified with ground-truth data. To quantify IID over a regional freeway network using existing traffic sensor measurements, a new approach for IID estimation was developed in this study. This new approach combines a modified deterministic queuing diagram with short-term traffic flow forecasting techniques to overcome the limitation of the zero vehicle-length assumption in the traditional deterministic queuing theory. A remarkable advantage with this new approach over most other methods is that it uses only volume data from traffic detectors to compute IID and hence is easy to apply. Verification with the video-extracted ground truth IID data found that the IID estimation errors with the new approach were within 6 percent for the two incident cases studied. This implies that the new approach is capable of producing fairly accurate freeway IID estimates using volumes measured by existing traffic sensors. This approach has been implemented on a regional map-based platform to enable quick, convenient, and reliable freeway IID estimates in the Puget Sound region
Measurement of recurring versus non-recurring congestion by Mark E Hallenbeck ( Book )
6 editions published in 2003 in English and held by 36 WorldCat member libraries worldwide
This report documents the technical results of a WSDOT-sponsored research effort to determine the nature and cause of congestion on Seattle-area freeways based on an analysis of available databases of traffic incidents and freeway performance. The focus of this effort was to develop a methodology for estimating freeway congestion as a function of its estimated cause (principally, its recurring or nonrecurring nature) by using readily available data, as well as to develop, implement, and use a prototype tool set that would apply that methodology. The resulting methodology and tool set produce estimates of congestion (delay) associated with recurring and non-recurring conditions as a function of various user-specified parameters and assumptions. The method is able to analyze Seattle area corridors using data from existing databases. The process makes extensive use of the TRAC-FLOW analysis process, as well as supplementary prototype tools
Transit implications of HOV facility design by G. Scott Rutherford ( Book )
3 editions published between 1995 and 1996 in English and held by 32 WorldCat member libraries worldwide
Investigation of culvert hydraulics related to juvenile fish passage by Michael E Barber ( Book )
4 editions published in 1996 in English and held by 30 WorldCat member libraries worldwide
The automated use of un-calibrated CCTV cameras as quantitative speed sensors, Phase 3 by Daniel J Dailey ( Book )
3 editions published between 2005 and 2006 in English and held by 30 WorldCat member libraries worldwide
The use of small unmanned aircraft by the Washington State Department of Transportation by Edward Donald McCormack ( Book )
3 editions published in 2008 in English and held by 28 WorldCat member libraries worldwide
Small, unmanned aerial vehicles (UAVs) are increasingly affordable, easy to transport and launch, and can be equipped with cameras that provide information usable for transportation agencies. The Washington State Department of Transportation conducted a series of UAV tests to evaluate their capabilities while also exploring institutional issues. These tests, while exploring the general capabilities of UAVs, focused on evaluating the use of a UAV as an avalanche control tool on mountain slopes above state highways. WSDOT's maintenance division has an active snow avalanche control program that is designed to reduce highway closure time and hazards to motorists, and the use of UAVs was seen as having some potential operational advantages. The UAVs also captured aerial images suitable for traffic surveillance and data collection. The evaluation found that the main limitation to UAV use is institutional, particularly the need to obtain approval to fly from the Federal Aviation Administration (FAA). This approval process will make UAV use a challenge, but these issues may change as the FAA considers new rules
A self-describing data transfer methodology for ITS applications : executive summary by Daniel J Dailey ( Book )
6 editions published between 1999 and 2000 in English and held by 28 WorldCat member libraries worldwide
Anchorage of large-diameter reinforcing bars grouted into ducts ( Book )
3 editions published in 2008 in English and held by 28 WorldCat member libraries worldwide
The use of a few large-diameter reinforcing bars for the construction of precast concrete bridge bents allows simplified construction by reducing the number of alignments to be made in the field. These bars are grouted into ducts in a precast concrete cap beam. In the proposed precast concrete substructure system, the grouted bars carry tensile forces across the joint between the column and cap beam. This joint is the yielding element in the structural system, and it is crucial to the performance of the structure that the bars yield before other failure mechanisms, including bond failure, occur. However, the cap beam is typically insufficient to anchor the bar, as the depth of the beam is substantially less than the American Association of State Highway and Transportation Officials (AASHTO) bridge code allows. For this project, 17 pullout tests were conducted to determine the bond characteristics and development length of large-diameter bars grouted into ducts. The bars tested ranged in size from #8 to #18. Pullout tests conducted with embedment lengths of at least six bar diameters yielded the reinforcing bar, while the test conducted with an embedment length of 14 bar diameters resulted in bar fracture. The tests and subsequent analysis showed that the bond of these grouted connections is significantly better than the bond of bars cast directly into concrete. The development lengths needed to fully anchor the bar are therefore within the depth available in the cap beam
Seismic vulnerability of the Alaskan Way Viaduct : geotechnical engineering aspects by Steven Lawrence Kramer ( Book )
2 editions published in 1995 in English and held by 27 WorldCat member libraries worldwide
Travel indicators and trends in Washington State by Anne Vernez Moudon ( Book )
2 editions published in 2005 in English and held by 27 WorldCat member libraries worldwide
Transit system performance evaluation methodology for Washington State : summary by William J Kelley ( Book )
3 editions published in 1983 in English and held by 27 WorldCat member libraries worldwide
Assessing the benefits of traveler and transportation information systems by Taryn Kristof ( Book )
3 editions published in 2005 in English and held by 27 WorldCat member libraries worldwide
Analytical modeling of foundations for seismic analysis of bridges by William F Cofer ( Book )
2 editions published in 1994 in English and held by 26 WorldCat member libraries worldwide
WSDOT's role in transportation demand management : strategic interest, structure, and responsibilities ( Book )
2 editions published in 2005 in English and held by 25 WorldCat member libraries worldwide
 
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Alternative Names
TRAC (Washington State Transportation Center)
University of Washington. Washington State Transportation Center
Washington (State). State Transportation Center
Washington State Transportation Research Center
Washington State University. Washington State Transportation Center
Washington (State). Washington State Transportation Center
Languages
English (85)