The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations.
Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.
Pavement Management System Guidebook Review Team
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1994-12-01
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The purpose of this guide is to provide Washington's local agencies with a practical document that will assist pavement managers in understanding the pavement management process and the steps necessary to implement their own pavement management systems. Chapters in the guide cover such topics as system requirements, getting started, defining the ro
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Geographic display of Census data in transportation planning and policy decisions are compiled in a report of 49 maps, depicting use of the data in applications such as travel demand model development and model validation, population forecasting, corridor analysis, and transit route planning. The report has compiled maps from many different types o
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This report describes the behavior of jointed concrete pavement based on field performance and current analysis and design technology. Distress data from a rigid pavement database and existing analysis programs developed at the Center for Transportation Research at The University of Texas at Austin served as the basis for the analytical procedure.
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This report summarizes results of a study of detector placement on the diamond interchange frontage road (ramp) using the Texas Intersection Simulation Model. The criterion used for the optimization is the minimization of delay. A secondary criterion is to reduce the dilemma zone to a minimum. The results indicate that the first detector located al
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Freeway management systems are used to reduce freeway traffic congestion problems. A major component of freeway management is the inductance loop detector. This research effort evaluates many aspects of inductance loop detectors in freeway management and computerized traffic signal situations to determine the best placement of detectors for compute
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Operating a high occupancy vehicle (HOV) lane within a relatively narrow roadway has the potential for a total blockage of the roadway when an incident occurs. This fact places special requirements on the information system for operation of the HOV facilities. This report combines the findings of other phases of this research with the special requi
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The Texas Department of Transportation (TxD01) is implementing a Profilograph-based QC/QA smoothness specification wherein surface smoothness is measured using the Profile Index (PI) determined from Profilograph data. In view of the relative importance of the daily average PI, it is imperative that the reduction of profilograms be completed expedit
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The level of maintenance within the state of Texas varies to a substantial degree. Desirably the maintenance would be a reasonably uniform level across all the various essential components. The purpose of this project was to devise methods for objectively measuring the essential elements maximizing automated data collection techniques. The developm
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This report documents the mobile source emissions estimation methodology used for the conformity analysis of the Transportation Improvement Program (TIP) and the metropolitan transportation plan (MTP) for El Paso. Included in the report is a brief overview of the emission estimation methodology and the 24-hour traffic assignments used in the analys
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The punching shear behavior of concrete bridge decks under static, pulsating fatigue, and rolling fatigue loads was studied using analytical and experimental models. In this report, study results are presented for static and pulsating fatigue loads on cast-in-place and precast, prestressed panel bridge decks. Complete study conclusions will be pres
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The purpose of this study is to assess the sensitivity of four highway bridges to wind and live loadings. The bridges are planned for construction on U.S. 59 in Houston, Texas. Each bridge will be of the tied-arch type and will be constructed on-grade over cut areas with clear spans in excess of 61 meters (200 feet). To expedite construction, uniqu
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Oregon Department of Transportation staff evaluated waterborne, latex traffic paint and Visibeads (registered trademark) to determine if the application characteristics and durability of these pavement marking materials deserved further consideration. Findings indicate that: waterborne latex paint is an acceptable alternative to conventional paints
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Porous pavements or open graded asphalt mixtures have been in use in Oregon since the late 1960s. The use of this pavement type has increased over the years because the pores in the mat provide a better way for water to drain from the surface. This greatly increases the safety in the areas of skid resistance and splash and spray. An added benefit f
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Porous pavements or open graded asphalt mixtures have been in use in Oregon since the late 1960s. The use of this pavement type has increased over the years because the pores in the mat provide a better way for water to drain from the surface. This greatly increases the safety in the areas of skid resistance and splash and spray. An added benefit f
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In 1988, The Oregon Department of Transportation installed low-cost piezoelectric weigh-in-motion cables at three locations and in ten lanes on Interstate 5 and 205. This report documents the installation of the systems, problems, and results from 1988 to 1993.The findings show that these systems are sensitive to pavement temperatures and need to a
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This GAO report to Congress discusses how FAA made its decisions to locate air traffic control facilities and equipment in fiscal years 1992 through 1994 for three terminal area projects: (1) establishment of Instrument Landing Systems (ILS), which allow aircraft to approach and land at airports during adverse weather; (2) replacement of antiquated
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This working paper is the fourth in a series to document analysis and results from the 1990 MTC household travel survey. Previous working papers on the 1990 travel survey covered survey design issues, sample weighting and expansion, and trip linking procedures. The purpose of this paper is to report weighted and expanded results of the 1990 househo
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It is now axiomatic that America's population is growing older. Primary indicators of this aging are the number of individuals ages 65 years and over (which increased from about 26 million in 1980 to over 33 million by 1990) and the elderly percentage of the total population (which increased from just above 11 percent in 1980 to 13 percent in 1990)
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This research study was a joint venture of the Oregon Department of Transportation (ODOT), Evans, Loosely, Inc., and Roseburg Paving Company, to evaluate the use of Urea Urethane Dispersion (UUD) agent, with finely ground tire rubber, high float emulsion, and recycled asphalt pavement (RAP). The combination of materials was reported to increase the
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