TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 383: Changeable Message Sign (CMS) Displays During Non-Incident, Non-Roadwork Periods explores the use of CMSs to convey messages on non-recurrent, environmental, special event traffic, and other special problems.
National Academies of Sciences, Engineering, and Medicine. 2008. Changeable Message Sign Displays During Non-Incident, Non-Roadwork Periods. Washington, DC: The National Academies Press. https://doi.org/10.17226/23070.
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