EVALUATION OF A CHANGEABLE MESSAGE SIGN SYSTEM ON THE INBOUND GULF FREEWAY
This study is concerned with the evaluation of real-time changeable message signs that inform motorists of freeway traffic conditions. Included in the study is an evaluation of the use of a letter-grade rating scale for indicating freeway conditions. Evaluation was accomplished through the use of a questionnaire survey and a traffic operations analysis. The study results showed that the changeable message signs were effective in providing information to the motorist. Considerable motorist diversion was noted during analysis incidents which were accompanied by a "LANE BLOCKED" display. The signs were highly visible, generally understood, and useful within the constraints of corridor geometry. Lack of understanding of the letter-grade rating scale employed was attributed to the fact that the scale was not anchored to a readily understandable base. Questionnaire results showed that a vast majority of the respondents found the system useful.
- Sponsored by the Texas State Department of Highways and Public Transportation; Transportation Planning Division. Research performed in cooperation with the Department of Transportation, Federal Highway Administration.
Arlington, TX United States 76011
Washington, DC United States 20590
- Stockton, W R
- Dudek, C L
- Fambro, D B
- Messer, C J
- Publication Date: 1975-8
- Pagination: 109 p.
- TRT Terms: Evaluation; Freeway operations; Highway operations; Motorist aid systems; Questionnaires; Traffic; Variable message signs
- Subject Areas: Highways; Operations and Traffic Management;
- Accession Number: 00133959
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: TTI-2-18-75-200-1F Final Rpt., FCP 41C3-554
- Contract Numbers: 2-18-75-200
- Files: TRIS, ATRI, USDOT
- Created Date: Jun 23 1976 12:00AM