OMNNI Associates

For more information contact:
Andy Rowell, P.E., PTOE
Traffic Engineer
(920) 735-6900








Your Resource for MUTCD Sign
Retroreflectivity Requirements


FHWA Maintaining Traffic Sign Retroreflectivity
Click here to view

FHWA Nightitme Visibility (training courses and technical guidance for sign visibility)
Click Here to view

FHWA Sign Retroreflectivity Toolkit
Click here to view

American Traffic Safety Services Association
Click here to view


January 2012 - By this date, all agencies will have to establish and implement a sign maintenance program that addresses the minimum sign retroreflectivity requirements.

January 2015- By this date, all agencies must comply with the new retroreflectivity requirements for most of their traffic signs they have installed, including all red and white or white and black “regulatory” signs (such as STOP signs and Speed Limit signs), yellow and black “warning” signs, and ground-mounted green and white “guide” signs (except street name signs).

January 2018 - By this date, all agencies must comply with the new retroreflectivity requirements for overhead guide signs and all street name signs.


OMNNI has proven experience in collecting sign inventory information in a timely and cost-effective manner. Our traffic engineers played an integral role in the development of the Fox Cities Convention and Visitors Bureau Wayfinding Signage Plan. To develop the signing plan, it was necessary to know what signs and other facilities (power poles, hydrants, etc.) already existed at locations where wayfinding signs were planned to go. With the use of a handheld GPS unit, one person was able to collect all of the necessary field data for over 150 potential signs in a matter of days.

How does it work? A sign inventory is taken using a Trimble GeoXT handheld GPS unit that can record the location of a sign to an accuracy of less than 3 feet. Additional sign information (such as sign size, type, and orientation) is collected in project-specific drop-down menus on the mobile device. The GPS unit can also take a picture of the sign that is linked with the GPS data. The data is then downloaded into a database for further engineering analysis. Here we can review which signs and sign types are in need of replacement, and can develop the most cost-effective way to maintain your sign infrastructure.