Speed reduction effects of changeable message signs in a construction zone : a report of the findings of investigation of speed control methods in work zones

Research output: Book/Report/Conference proceedingTechnical report

Original languageEnglish (US)
Place of PublicationUrbana, Ill
PublisherUniversity of Illinois at Urbana-Champaign
StatePublished - 1992

Publication series

NameIllinois Cooperative Highway Research Program Series
No.239

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