Changeable Message Sign Displays During Non-Incident, Non-Roadwork Periods (2008) / Chapter Skim
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5GENERAL PURPOSE OF CHANGEABLE MESSAGE SIGNS Road signs exist to communicate information to motorists. Static guide signs are permanent and are limited to presenting information that is largely "geographically linked." Changeable message signs (CMSs)
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synthesis, permanent CMSs are referred to as CMSs.) Information gathered for this synthesis included the following: • Agency policies, guidelines, practices, and procedures for displaying or prohibiting messages during non-incident/ non-roadwork periods in both urban and rural areas; • Categories of messages displayed; • Prioritization of messages displayed and rank order, if applicable; • Message content; • Experiences and lessons learned by agencies about displaying messages [e.g., travel time, AMBER alert, public service announcements (PSAs)
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7in the e-mail requested that the questionnaire be forwarded to the manager/supervisor of all TMCs within the agency. The questionnaire, as shown in Appendix A, contained several decision logic branches so that certain questions were automatically skipped based on responses to other questions.
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