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South Dakota Department of Transportation
Project Synopsis

Title: Use of Speek Monitoring Display for Traffic Control
Project Researcher: Jim Benshoof,
Project Manager:
Research Period: -
Cost: $0.00

Problem Statement:A recently completed study (SD92-10) entitled Work Zone Safety Device Evaluation evaluated several safety devices developed by the Strategic Highway Research Program. Included in the evaluation was a speed monitoring display, a small trailer which displays the speed of traffic, measured by a radar gun. This display was placed on the shoulder, a short distance ahead of an interstate work zone. The technical panel stated that this display "could be very effective, especially if its visibility and placement were improved."

In the 1992 study, the speed monitoring display may have been placed too close to other work zone traffic control devices used in the study to adequately assess its effectiveness. Also, the panel felt the display was not readable enough, and there was too much information presented on the display to gain the full attention of the motorists. The panel then recommended that "The Office of Research should initiate further research to refine the speed monitoring display and evaluate its effectiveness in freeway and urban applications." The panel also recommended that a work zone dedicated to the study of this device be used, so as to keep conditions constant throughout the duration of the study.


Research Objectives:
1  To perform a search on new speed monitoring products, including other DOT interviews.
2  To identify or develop an appropriate cost-effective speed monitoring display for use in work zones.
3  To Evaluate display's effectiveness of reducing speeds in work zones.

Research Tasks:
1  Meet with the project's technical panel to review project scope and work plan.
2  Perform literature search including potential vendors and AASHTO E-mail search of other DOT's.
3  Identify or develop speed monitoring display, or add radar to changeable message sign.
4  Meet with panel regarding results of search and sign options.
5  Determine study site and type of work zone and develop study plan with panel.
6  Conduct field study and evaluate results.
7  Prepare a final report and executive summary of the literature review, research methodology, findings, conclusions, and recommendations.
8  Make an executive presentation to the SDDOT Research Review Board at conclusion of the project.

Documents Available:

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