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Speed Management: Noteworthy Practice and Guidance

Project Details
STATUS

In-Progress

PROJECT NUMBER

19-685

START DATE

01/01/19

END DATE

11/30/19

FOCUS AREAS

Safety

RESEARCH CENTERS InTrans, CTRE, REACTOR
SPONSORS

Iowa Department of Transportation

Researchers
Principal Investigator
Shauna Hallmark

Director, InTrans

Co-Principal Investigator
Neal Hawkins

Associate Director, InTrans

About the research

Speeding is a deadly and persistent issue faced by transportation agencies trying to balance mobility and safety. Residents within small rural Iowa communities are especially vulnerable to speeding as a safety concern given that the state highways or county roads through town provides ever important connectivity as well as positive economic benefits. So, how do we slow them down without turning them away?

This project combines several speed management ideas, discussed between Iowa Department of Transportation and Institute for Transportation staff. Objectives include the following:

  • Assess current state-of-the-practice and best practices in setting speed limits. This would summarize information that can be used to address legislators and policy makers.
  • Summarize best practices in use of dynamic speed feedback signs (DSFS). DSFS have been shown to be effective in both urban and rural applications. However the devices are reasonably expensive so agencies need guidance on when they are the most appropriate rather than reacting to citizen requests for unilateral application. This task will summarize known research on their effectiveness in different roadway settings. Recommendations on the use specific to Iowa will be developed.
  • Establish a web-based resource for agencies and consultants to rely on when addressing speed management issues.
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