P RACTICES TO M ANAGE T RAFFIC S IGN R ETROREFLECTIVITY NCHRP Project 20-05 Synthesis Topic 42-12...
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Transcript of P RACTICES TO M ANAGE T RAFFIC S IGN R ETROREFLECTIVITY NCHRP Project 20-05 Synthesis Topic 42-12...
PRACTICES TO MANAGE
TRAFFIC SIGN RETROREFLECTIVITYNCHRP Project 20-05Synthesis Topic 42-12
Paul CarlsonJune 21, 2011
Synthesis Objective
•Document the state-of-the-practice
•Provide examples of effective strategies
•Show how other agencies can remain in compliance
•Determine needs and areas of future research
Report Status
•Draft Final Report complete
•Panel meeting June 28, 2011 Irvine, California
•Report published before end of the year
Report Outline• Background
• Description of MUTCD Maintenance Methods
• Range of Practices
• Case Studies
• Best Practices
• Research in Progress and Research Needs
• Conclusions
• Appendices – Policies, Practices, Guidelines, Documentation / Reporting
MUTCD: Section 2A.08 Maintaining Minimum Retroreflectivity
Standard:
Public agencies or officials having jurisdiction shall use an assessment or management method that is designed to maintain sign retroreflectivity at or above the minimum levels in Table 2A-3.
MUTCD Methods
•Visual assessment
•Measured retroreflectivity
•Expected sign life
•Blanket replacement
•Control signs
•Future methods
•Combination of methods
Current Compliance Dates
•Jan 2012 Implementation and continued use of an
assessment or management method
•Jan 2015 Replacement of noncompliant regulatory, warning,
and post-mounted guide signs
•Jan 2018 Replacement of noncompliant street name signs
and overhead guide signs
Survey Participants16 states, 9 cities, 15 counties, and 9 others
Methods Being Used
MUTCD MethodsPrimary Sign
Replacement MethodSecondary or
Support Method
Nighttime Inspection 13 2
Measured Retro. 2 0
Expected Sign Life 17 16
Blanket Replacement 7 4
Control Signs 2 10
Case Studies
•St. Louis County, Minnesota
•City of Phoenix, Arizona
•Missouri Department of Transportation
MUTCD maintenance methods
MUTCD maintenance methods
FHWA-HRT-08-026FHWA-SA-07-020
Discussions and
Questions