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- catalog alternative "Changeable message displays.".
- catalog alternative "Freeway lane closures.".
- catalog contributor b1532229.
- catalog contributor b1532230.
- catalog created "1981.".
- catalog date "1981".
- catalog date "1981.".
- catalog dateCopyrighted "1981.".
- catalog description "Includes bibliographical references.".
- catalog extent "49 p. :".
- catalog identifier "0309031621 :".
- catalog isPartOf "National Cooperative Highway Research Program report ; 235".
- catalog issued "1981".
- catalog issued "1981.".
- catalog language "eng".
- catalog publisher "Washington, D.C. : Transportation Research Board, National Research Council,".
- catalog subject "Electric signs.".
- catalog subject "Express highways Maintenance and repair Safety measures.".
- catalog subject "Roads Design and construction Safety measures.".
- catalog subject "Traffic signs and signals.".
- catalog title "Changeable message displays.".
- catalog title "Effectiveness of changeable message displays in advance of high-speed freeway lane closures / Fred R. Hanscom.".
- catalog title "Freeway lane closures.".
- catalog type "text".