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.
A summary of the 1992 analysis of cost responsibility, including estimates for 1993 and 1994, is presented. The methodological process is described. The process involves 1) designation of vehicle classes and fleet estimation; 2) revenue estimation and allocation; 3) cost estimation and allocation; and 4) revenue/cost comparison. Based on the analys
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This report describes the proposed modules of TxDOT' s new Pavement Management Information System (PMIS) including · Utility Curves, · Performance Curves, · Needs Estimate Program, · Optimization Program, and · Impact Analysis Program. PMIS will use the pavement condition data currently being collected for the Pavement Evaluation System (PES). Dist
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This report discusses the activities conducted for the Houston District on a variety of topics. High Occupancy Vehicle (HOV) Lane evaluations were conducted quarterly on five facilities and twenty-nine park and ride facilities were surveyed. Dynamic Lane Assignment Systems (DALAS) were evaluated, Automatic Vehicle Identification (AVI) Systems were
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This project determines how motorists interpret or respond to various sign and pavement marking alternatives they may or may not have experienced before. Motorist interpretation of signs and markings were obtained through surveys, while field observations were used to measure actual motorist responses to pavement markings. The results from both sur
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The intercity bus industry in the United States has been in a decline since the end of World War II. The decline is attributed to the increase in the use of private automobiles and competition for intercity passengers by airlines. Passage of the Bus Regulatory Reform Act in 1982 allowed bus companies to exit from unprofitable routes, resulting in a
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A computer program FWD-DYN has been developed to perform forward analyses simulating the Falling Weight Deflectometer test, and to perform inversion of actual field data to estimate the Young's moduli of the surface layer, the base and the subgrade of a pavement system. In the first case the dynamic displacements at various points along the surface
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This project developed a draft specification for asphalt concrete pavement construction smoothness testing. The South Dakota Road Profiler, smoothness measuring equipment already owned by SDDOT, was used as the testing device. Since the objective of this testing was to assure road smoothness, automated means were devised to find localized roughness
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This report details progress to date on a set of tasks being performed by Sandia National Laboratories (SNL) for the Department of Transportation (DOT). These tasks identify and examine the feasibility of technologies for the DOT's Commercial Vehicle Operations (CVO) component of the Intelligent Vehicle Highway Systems (IVHS) program. Specifically,
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This Interface Control Document (ICD) defines the requirements related to the interface between the Space Segment (SS) of the Global Positioning System (GPS) and the Navigation Users Segment of the GPS. 2880k, 154p.
United States. Federal Aviation Administration. Office of System Capacity and Requirements
1993-10-01
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PDF
The Aviation System Capacity Plan is published annually and, in addition to providing airport delay statistics, serves to identify programs that have potential for increasing capacity and reducing delay.
Increased emphasis on energy efficiency and air quality has resulted in a number of state and federal initiativesexamining the use of alternative fuels for motor vehicles. Texas' program for alternate fuels includes compressednatural gas (CNG). Based on an analysis of 30-year life-cycle costs, CNG is a cost-effective option for high-mileagetaxi ope
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This report is published by the Metropolitan Transportation Commission(MTC) to provide information concerning local Bay Area airport activity andairport noise trends. The airport activity data are obtained from publishedairline schedules and from the monthly airport activity reports. Informationrelating to airport noise trends is obtained from the
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The Portland Regional Transportation Plan’ indicates that by the year 2010, $5 billion dollars will be spent on transportation, and the region will have even more congestion on major corridors than today. The Portland region cannot rid itself of congestion by simply building new transportation infrastructure. A coordinated, systematic approach will
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Freeway ramp metering systems have been used to improve urban freeway flow. However, control strategies must be properly adjusted to account for ramp queues overflowing onto surface streets and provide equitable on-ramp control during various operating periods. An improved solution can be obtained by optimizing this problem simultaneously for a gro
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This report focuses on aggregates used in the construction of continuously reinforced concrete pavements (CRCP). Specific chapters address (1) past research regarding aggregates used in asphalt concrete paving, (2) field and laboratory investigations of asphalt concrete pavements, and (3) CRCP behavior and distress. Also addressed are research acti
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This research report represents the latest revisions to the software, PREPIN, POLFAC5A, COADJ, IMPSUM, and SUMALL. The report is presented as a user's guide; operating instructions are provided for each program. The mainframe programs were developed to estimate mobile source emissions and vehicle miles traveled (VMT). The PREPIN program allows the
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The Texas Package of travel demand forecasting programs is a mainframe mathematical model for forecasting travel in urban areas in the state of Texas. Interactive Lotus 1-2-3 spreadsheet templates have been developed to provide case study examples of the mathematical functions used in the Texas Package. This manual is intended for use by the Texas
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The Houston Motorist Assistance Program (MAP) assigned two vans to patrol the U.S. 59 Southwest Freeway during the reconstruction projects. These patrols operated from about July 1991 until the majority of the construction was completed in September 1992. This report evaluates the benefits that this program produced during a one-year period. This s
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