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.
The report presents the findings of a study of eight noise barriers installed along interstate and primary roads. A total of 488 interviews were conducted in eight communities adjacent to the barriers to determine citizens' perception of the effectiveness- of these structures. For all eight sites, 57% of the people interviewed were satisfied with t
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The paper describes a unique methodology used in surveying and documenting architecture along eighteenth century road systems in Virginia which could be used as a prototype in other areas. In the method described the historian geographer, and architectural historian collaborate in research in primary sources such as court records, as well as second
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A correlation between the results obtained with the fatigue test and those from the indirect tensile test on two base mixes was attempted in anticipation of the possible use of the latter test to design base mixes for maximum fatigue life. Two base mixes at several asphalt contents were tested at two test temperatures. Flexural fatigue tests and in
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For the past several years Kossuth County, Iowa has had a scheduled maintenance program of bituminous seal coating. This program has been used to maintain the 467 miles of asphaltic concrete surfaced roads in Kossuth County. Since most of the experience that Kossuth County had in seal coating was with cutback asphalt, it was decided to include the
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The purpose of this project was to quantify the magnitude of changes in skid resistance over time, to isolate the variables that seem most important with respect to the changes, and, to the degree possible, formulate a model for converting skid resistance values obtained under a given set of conditions to the values that would be measured under a d
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The chevron pattern consists of alternate orange and white stripes that form an arrow pointing in the direction in which traffic is being diverted. The objectives of this research were (1) to select the most effective design for the chevron pattern, and (2) to evaluate the effectiveness of selected chevron designs under road conditions as compared
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The research was conducted to develop a cost-effectiveness model for guardrail selection that includes cost parameters for eleven (11) guardrail configurations and criteria for analysis of system effectiveness under various dynamic impact conditions. This volume is a user's manual for applying the cost-effectiveness computer programs for (1) select
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