Need more information?
The Minnesota LTAP Librarian can help you find and obtain LTAP and CTS publications and research, as well as transportation-related materials from other libraries and databases.
Please call 612-624-3646 or e-mail library@cts.umn.edu.
Signs and Signals
Maintaining Traffic Sign Retroreflectivity
2008 Rule Revision
The FHWA Office of Safety advised all LTAP Centers that the Final Rule for maintained sign retroreflectivity went into effect on January 22, 2008.
The FHWA Visibility Web site includes the text of the rule, the changes to the MUTCD text, a brochure that explains the changes, and other related items.
Ken Schroepfer and Kathy Schaefer of Mn/DOT created this presentation on Minimum Retroreflectivity Levels for Traffic Signs (1.58 MB PDF) in March 2008.
Minnesota Manual on Uniform Traffic Control Devices (MN MUTCD)
2005, revised in 2007
The 2005 “Minnesota Manual on Uniform Traffic Control Devices for Streets and Highways” (2005 MN MUTCD) has been established to provide a uniform policy for all traffic control devices on all public streets, roads and highways within the State of Minnesota. It is based on the Federal MUTCD, and published by the Mn/DOT Office of Traffic, Security and Operations- Publications, which also publishes the Minnesota Flagging Manual, Temporary Traffic Control Zone Layouts Field Guide, and more.
Traffic Signal Management Resources
FHWA
The FHWA is committed to providing the tools necessary to assist agencies in developing and sustaining effective traffic signal management, operations, maintenance and signal timing practices. To improve traffic signal operations, the Arterial Management Program has strategically developed a toolbox with a blend of Outreach, Guidance, Training and Research to advance each of the focus areas.
Find more information on this topic:
These pre-constructed searches can help you find current resources on this topic.