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TRIS Online is a public-domain, web-based version of the Transportation Research Information Services (TRIS) bibliographic database. The TRIS Online database contains over half a million records of published transportation research including technical reports, books, conference proceedings and journal articles. Currently there are almost 24,000 TRIS records with links to electronic copies of the full-text. The time span covers literature from the 1960s to the present, with some coverage of prior years. Highway Research Board publications are covered back to 1923. TRIS coverage includes the disciplines of planning, finance, design and construction, materials, environmental issues, safety and human factors and operations for the modes of highways, transit, railroads, maritime and aviation. TRIS does not contain information on vehicle standards and specifications, patent information, market research, military transport or news articles. TRIS focuses on transportation research.
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