The Strategic Highway Research Program developed and coordinated construction of test sections for flexible pavement maintenance throughout the United States and Canada. Test sites included specific test sections for evaluation of the performance of crack sealing, slurry seals, chip seals, and thin hot-mix overlays as maintenance treatments. Each s
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A first step in preserving the history of women in transportation, this guide describes innovative and remarkable women who have pioneered and succeeded in different transportation modes.
This report presents the development and verification of a testing protocol and protocol equipment for confined extension testing and confined creep testing for geosynthetic reinforcement materials. The developed data indicate that confined response significantly improves stress strain response of geosynthetic materials, especially nonwoven geotext
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Trail signs are normally mounted at a set height on a post planted in the ground. Once the snow has piled up over the sign, the sign is no longer effective. Ranger Districts with winter trails programs have been dealing with the problems of signing snow trails for as long as they have managed winter trails. This report describes signpost systems th
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This paper is designed to provide funding guidance for state officials who intend to develop, operate, and maintain intelligent transportation systems/commercial vehicle operations (ITS/CVO) projects and programs.
Highway anti-icing is the snow and ice control practice of preventing the formation or development of bonded snow and ice by timely applications of a chemical freezing-point depressant. Its operations consist of chemical applications and coordinated plowing. The prefix "anti" signifies the preventive nature of anti-icing and distinguishes it from d
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This report describes the results of an on-road study that examined how Advanced Traveler Information Systems (ATIS) information influences driver behavior. The objective of the study was to develop ATIS design guidelines, primarily for In-Vehicle Signing and Information Systems (ISIS) and In-Vehicle Safety Advisory and Warning Systems (IVSAWS), to
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Since the initial development of prototype automotive head-up displays (HUDs), there has been a concern that the presence of the HUD image may interfere with the driving task and negatively impact driving performance. The overall goal of this experiment was to examine the driving performance implications of an automotive HUD when used to present si
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This Interim Technical Bulletin recommends procedures for conducting Life Cycle Cost Analysis (LCCA) of pavements, provides detailed procedures to determine work zone user costs, and introduces a probabilistic approach to account for the uncertainty associated with LCCA inputs. The bulletin begins with a discussion of the broad fundamental principl
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This catalog has been developed to provide potential sponsors a single reference on training courses available from the National Highway Institute (NHI).
This report contains the test setup and results from seven pendulum crash tests conducted at the Federal Outdoor Impact Laboratory (FOIL) located at the Turner-Fairbank Highway Research Center (TFHRC) in McLean, Virginia. The tests were conducted on fiber-reinforced plastic (FRP) composite guardrail elements. Three 2440~mm-long and four 3660~mm-lon
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Recycling or reuse of existing asphalt pavement materials to produce new pavement materials has the following advantages: (a) reduce costs of construction, (b) conservation of aggregate and binder, (c) preservation of the existing pavement geometrics, (d) preservation of the environment, and (e) conservation of energy. There is a need to train gove
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A major goal of the Long-Term Pavement Performance (LTPP) study is the development of recommendations for improving the design and construction of new and rehabilitated pavements to make them longer lasting. As part of the condition monitoring of the LTPP test sections, friction data are being collected on a regular basis at each test site. Frictio
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The I-40 Traveler and Tourist Information System (TTIS) in northern Arizona is a Field Operational Test (FOT) of Traveler Information Services in Tourism Areas funded through the National Advanced Rural Transportation Systems Program. The segment of rural Interstate 40 (I-40) crossing Arizona is a major East-West thoroughfare serving Arizona and it
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The Branson Travel and Recreational Information Program (TRIP) is a Field Operational Test (FOT) of Traveler Information Services in Tourism Areas funded through the National Advanced Rural Transportation Systems Program. Over the past ten years, Branson, Missouri has grown to be known as the “live entertainment capital of the world.” With more tha
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United States. Joint Program Office for Intelligent Transportation Systems
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1998-02-03
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Intelligent Transportation Systems (ITS), formerly Intelligent Vehicle-Highway Systems (IVHS), provide the tools to help us address current surface transportation problems, as well as anticipate and address future demands through an intermodal, strategic approach to transportation. ITS applies current and emerging technologies in such fields as inf
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Time domain reflectometry (TDR) is a technique used to measure indirectly the in situ volumetric moisture content of soil. Current research provides a variety of prediction equations that estimate the volumetric moisture content using the dielectric constant calculated from the apparent length obtained from the TDR reader. However, very limited res
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Mitretek Systems. Center for Telecommunications and Advanced Technology
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1998-02-01
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This is one of a series of documents providing support for deploying Intelligent Transportation Systems (ITS). This document focuses on traffic signal control, a component of ITS. It aims to provide practical help for the traffic engineering community with deploying traffic signal control systems in an integrated, multimodal environment using the N
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This Technical Manual is for the Federal Highway Administration’s Traffic Noise Model (FHWA TNM®), Version 1.0 -- the FHWA’s computer program for highway traffic noise prediction and analysis. Two companion reports, a User’s Guide and a data report, respectively, describe the use of TNM and its vehicle noise-emissions data base. The Technical Manua
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