WorldCat Identities

Washington State Transportation Center

Overview
Works: 791 works in 1,263 publications in 1 language and 6,956 library holdings
Genres: Software 
Classifications: TE7, 625.7 S
Publication Timeline
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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 134 WorldCat member libraries worldwide
An evaluation of granular overlays in Washington State final technical report by Daniel J 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 64 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
Quantifying incident-induced travel delays on freeways using traffic sensor data by Yinhai Wang( Book )
9 editions published between 2008 and 2011 in English and held by 42 WorldCat member libraries worldwide
Traffic congestion is a major operational problem for freeways in Washington State. Recent studies have estimated that more than 50 percent of freeway congestion is caused by traffic incidents. To help the Washington State Department of Transportation (WSDOT) identify effective countermeasures against such congestion-inducing incidents, a thorough understanding of travel delays caused by incidents is essential. By using traffic data extracted from archived loop detector measurements and incident log data recorded by the WSDOT Incident Response (IR) team, this research project developed a new algorithm for quantifying travel delays produced by different incident categories. The algorithm applies a modified deterministic queuing theory to estimate incident-induced delay by using 1-minute aggregated loop detector data. Incident-induced delay refers to the difference between the total delay and the recurrent travel delay at the time and location influenced by the incident. The uniqueness of the delay calculation in this study is the use of a dynamic traffic-volume-based background profile, which is considered a more accurate representation of prevailing traffic conditions. According to the test results, the proposed algorithm can provide good estimates for incident-induced delay and capture the evolution of freeway traffic flow during incident duration. Because actual traffic data measured by loop detectors were used in this study to compute vehicle arrival and departure rates for delay calculations, the estimated incident-induced delay should be very close to the reality. Additionally, the proposed algorithm was implemented in the Advanced Roadway Incident Analyzer (ARIA) system. ARIA is a database-driven computer system that automates all the computational processes. More accurate incident delay information will help WSDOT improve its understanding of congestion-inducing incidents and select more effective countermeasures against incident-related traffic congestion on freeways
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
A research effort was initiated to develop and test a methodology to estimate the extent to which urban congestion is produced by the routine presence of large numbers of vehicles on a facility (so-called recurring congestion) versus unexpected disruptions or other events (non-recurring congestion), particularly lane blocking incidents. An analysis was performed using a preliminary methodology to estimate the magnitude, extent, and relative causes of congestion on urban freeways in the central Puget Sound region of Washington State. This information is designed to assist transportation agencies in 1) selecting the most appropriate strategies to improve freeway operations, and 2) allocating available resources to achieve those improvements. This paper documents the preliminary methodology and results from this ongoing research project
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 31 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
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 29 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
Travel indicators and trends in Washington State by Anne Vernez Moudon( Book )
2 editions published in 2005 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
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
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
ATIS evaluation framework ( Book )
2 editions published in 2005 in English and held by 25 WorldCat member libraries worldwide
Evaluates five Washington State advanced traveler information system projects: Edmonds Ferry Terminal, SR 101, SR 2 and SR 97, SR 395, and Tacoma Traffic Management Center enhancement
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
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 (83)