The document summarizes a project to inventory and replace traffic signs along major streets in Phoenix, Arizona. Phase I involved inventorying over 28,000 existing signs along 215 miles of arterial streets. Phase II will use $3,000,000 in federal stimulus funds to replace nearly 17,000 signs that were identified through the inventory as needing replacement to meet federal retroreflectivity standards and improve maintenance efficiency. The project aims to develop a sign management system for the city to systematically maintain signs into the future.

1. Phoenix Sign Inventory and Replacement Ryan T. Cook Parsons Brinckerhoff

2. Purpose and Need Maintain signs on 750 miles of arterial streets Existing asset management system includes stop and yield signs only Increase efficiency/productivity of Sign Shop field crews Comply with FHWA mandate to upgrade sign sheeting and develop a sign management system

3. FHWA Minimum Maintained Retroreflectivity Levels FHWA recommended methods to maintain recommended minimum sign retroreflectivity Visual nighttime inspection Measured sign retroreflectivity Expected Sign life Blanket replacement Control signs Other methods

5. Installation

7. Sign densities average ~130 signs per mile

8. Inventoried more than 28,000 signs

10. 3M Field Capture System All roads driven both directions for a complete set of imagery Two vehicles captured all field data in 3 days System recorded 5 photographs per second (Photolog) 5 GPS coordinates per second (driving at speed limit)

11. 3M Field Capture System Dual cameras with mobile computer inside Driver provided real-time feedback on image quality and routes completed

12. Photolog Field Capture Example Front Camera Side Camera

14. Post-Processing Challenges: Classifying custom signs Difficult signs – small font, variations: No Parking, Push-button-to-cross, etc. Determining if signs are COP Multiple Post Types Illuminated Street Names Signs

16. Inventory Refinement Iterative review of GIS database and photolog inventory databases reviewed by COP & PB throughout the project description of sign location on-going discussion on scope, jurisdiction, sizes of each sign type method of describing signs (color, arrow directions, street names, speed limits, etc.)

17. Project Plans & Specs Summary tables list signs to be replaced 17,000 signs More than 50,000 square feet of sign panels Sign Handbook lists replacement details for each sign code

18. Sign Handbook Handbook created for each sign code including modified MUTCD signs Handbook records details of each code, number of signs within sign codes and replacement specifications Used for review and client/contractor reference

19. Internally Illuminated Signs Detailed intersection plan sheets identify illuminated signs for replacement

20. Project Specifications Sign material Aluminum panels Flexible sign material Retroreflective sheeting Hardware Sign Fabrication Sign Installation Recycling/Refurbishing Traffic Control ARRA Signs

22. Installation

24. Questions/Contacts Parsons Brinckerhoff Ryan T. Cook, 480-449-4609,