LTPP Data Help Minnesota Evaluate Performance Grades (PG) for Its Superpave System. LTPP data are a powerful resource that many member of the highway community are tapping into. For example, take Minnesota's Asphalt Pavement Association. When implementation of Superpave raised questions throughout the Minnesota highway community regarding adopting
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The Federal Highway Administration's Interactive Highway Safety Design Model (IHSDM) is a suite of CADD-compatible programs that highway designers can use to evaluate the safety effects of various design alternatives. The IHSDM will include a Policy Review Module, a Design Consistency Module, a Driver/Vehicle Module, a Traffic Analysis Module, and
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In order to begin to understand the public's views regarding the transportation services it receives, as part of the pre-test of the 1995 Nationwide Personal Transportation Survey, in a national telephone survey, over 4,000 adults were asked a series of questions about their reactions to many aspects of travel, with emphasis on elements of the road
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This manual was undertaken to record for all persons wishing to do concrete petrography the petrographic procedures that have been found useful at the Virginia Transportation Research Council. The manual is made up of an introduction and chapters on equipment, general initial procedures, cracks, preparation of specimens, voids (including determinat
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Spread footings are most often less expensive than deep foundations. In an effort to improve the reliability of spread footings, this research project was undertaken. The results consist of: (1) a user friendly microcomputer data base of spread footings, case histories and load tests; (2) the performance of five large scale square footings in sand;
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In response to the 1990 Clean Air Act Amendments (CAAA), areas designated as being in violation of the National Ambient Air Quality Standards (NAAQS) were required to submit State Implementation Plans (SIPs) beginning with 1990 Base Year Emissions Inventories. In an effort to support the successful implementation of the CAAA and to provide support
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The Clean Air Act Amendments (CAAA) of 1990 required areas designated as being in violation of the National Ambient Air Quality Standards for particle matter measuring less than or equal to 10 micrometers in aerodynamic mass median diameter (PM-10) to submit State Implementation Plans (SIPs) beginning with Base Year inventories. In recent years, PM
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The Clean Air Act Amendments of 1990 (CAAA) require that states submit State Implementation Plans (SIPs) detailing strategies to improve air quality in nonattainment areas. This analysis first reviews the administrative procedures that states and the EPA must undertake to submit and approve SIPs, as well as the status of that process. Then, the ana
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This report presents the findings of the study team on a Federal Highway Administration (FHWA) International Scanning Tour to the countries of Finland, Sweden, the Netherlands, and England. The tour was unique in that it represented the first time that a scanning tour was made to these countries expressly for the purpose of learning about innovativ
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At the direction of the Volpe National Transportation Systems Center of the US Department of Transportation (US DOT), a two-phase study of the security vulnerability of Maryland Intelligent Transportation Systems (ITS) was conducted from July until November 1997. The Phase 1 report, State of Maryland Intelligent Transportation Systems Security Requ
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United States. Joint Program Office for Intelligent Transportation Systems
1997-11-01
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The U.S. Department of Transportation (USDOT) is embarking on a new program called the Intelligent Vehicle Initiative (IVI). The USDOT intends to jointly define the program plan and conduct the IVI in cooperation with the motor vehicle, trucking, and bus industries, state and local governments, and other stakeholders to facilitate the research, dev
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This report describes existing and emerging exposure data sources for highway safety analysis. Existing exposure data sources reviewed include: Highway Performance Monitoring System (HPMS), Highway Safety Information System (HSIS), Long-Term Pavement Performance (LTPP) Monitoring System, Nationwide Personal Transportation Survey (NPTS), National Tr
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This conference was sponsored by the Travel Model Improvement Program.’ There were two principal goals of the conference: to improve understanding of the influence on travel behavior of urban development patterns specifically designed to reduce motor vehicle travel and to assess the-potential for telecommunications, particularly telecommuting, to r
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The planning, executing and interpreting the results of subsurface exploration of soil and rock for the design and construction of transportation facilities are presented. The geotechnical engineer's role in subsurface investigation, exploration methodologies, equipment types and their suitability to explore for various subsurface conditions and de
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The Intelligent Transportation Systems (ITS) program is the application of information technologies (computing, sensing, and communications) to surface transportation. Because of a reliance on these technologies, ITS will become increasingly dependent on information security. By understanding how to achieve and maintain secure systems, the ITS comm
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The Multi-Viewpoint Clustering Analysis (MVP-CA) tool is a semi-automated tool to provide a valuable aid for comprehension, verification, validation, maintenance, integration, and evolution of complex knowledge-based software systems. In this report, the contractor has shown the value of using their MVP-CA tool for analyzing a poorly structured rul
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This manual is a model to be followed by bridge paint inspectors on how to perform inspection duties properly. Given that most of today's bridge-paint work is being done on existing steel, this manual is geared toward people working in the field on existing steel. The manual is broken down into three primary sections. The first section covers the p
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Transportation planners have relatively sophisticated computer models available for forecasting travel demand and air quality, however the weak point in the process is the interface between the demand forecasting and the pollutant emission models. This report suggests various short term improvements that might be made to the speed estimation routin
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