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RETROREFLECTIVITY RetroView System

January 10, 2005. 2005 TRB Presentation. Mandli Communications, Inc.. Established in 1983Industry leader in cutting edge technology research and developmentOver two decades providing high quality systems and servicesSystems, software and service crews ready to deliver. . . . January 10, 2005. 20

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RETROREFLECTIVITY RetroView System

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    1. January 10, 2005 2005 TRB Presentation RETROREFLECTIVITY RetroView System Mandli Communications, Inc. 2005 TRB Conference Washington, D.C.

    2. January 10, 2005 2005 TRB Presentation Mandli Communications, Inc. Established in 1983 Industry leader in cutting edge technology research and development Over two decades providing high quality systems and services Systems, software and service crews ready to deliver

    3. January 10, 2005 2005 TRB Presentation Measuring Sign Retroreflectivity PROBLEM - rapidly determine sign reflectivity for a large number of signs SOLUTION - make automated sign reflectivity measurement an integral part of sign inventory creation RESULT - a two person crew can go from measuring 80-100 signs per day using existing methods to possibly measuring over 5,000 per day using the RetroView active sensor system

    4. January 10, 2005 2005 TRB Presentation RetroView Mobile Platform Vehicle continuously flashes the high-intensity light sources B/W cameras simultaneously capture images Light flashes are emitted at a rate of two per second Vehicle travels at posted highway speeds

    5. January 10, 2005 2005 TRB Presentation RetroView Color Camera View

    6. January 10, 2005 2005 TRB Presentation RetroView Low Intensity Grade Camera View

    7. January 10, 2005 2005 TRB Presentation RetroView High Intensity Grade Camera View

    8. January 10, 2005 2005 TRB Presentation Testing at TTI December 14-15, 2004 Mounted RetroView test system on mobile platform using Mandli vehicle Only 1 light source used giving approximately one pulse of high intensity light per second instead of the standard two pulses Tested system moving at various speeds on different types of road signs Testing at TTI shows consistent results on collection of data by the RetroView system

    9. January 10, 2005 2005 TRB Presentation TTI RetroView Testing System 2 cameras side by side 1 low intensity grade camera 1 high intensity grade camera 1 light source Emits high intensity light roughly once per second Light is not visible to human eye, poses no safety hazard

    10. January 10, 2005 2005 TRB Presentation RetroView Mobile Platform at TTI testing - December 14/15, 2004

    11. January 10, 2005 2005 TRB Presentation RetroCurve results for SEG speed limit sign

    12. January 10, 2005 2005 TRB Presentation RetroCurve results for SEG speed limit sign Results match TTIs measurement for Coefficient of Retroreflectivity Full Retroreflectivity curve is generated, not just the 0.2/-4 measurement Confirms repeatability on each different test pass Pass-to-pass accuracy variation of under 5%

    13. January 10, 2005 2005 TRB Presentation Intensity Results for Six Trials on 3M VIP Speed Limit Sign

    14. January 10, 2005 2005 TRB Presentation Results for 3M VIP speed limit sign Results confirm repeatability at 3 different speeds Confirms Intensity measurement repeatability on each different test pass

    15. January 10, 2005 2005 TRB Presentation Intensity Results for Six Trials on Avery Prismatic Speed Limit Sign

    16. January 10, 2005 2005 TRB Presentation Results for Avery Prismatic speed limit sign Results confirm repeatability at different speeds Confirms Intensity measurement repeatability on each different test pass LTI hand held devices cannot reliably measure prismatic materials

    17. January 10, 2005 2005 TRB Presentation RetroView TTI sample images of SEG speed limit sign - 12/15/04

    18. January 10, 2005 2005 TRB Presentation Advantages of RetroView SAFETY All data collection is automated inside the service vehicle No hand held measuring devices are used No need for personnel to be outside vehicle in or near moving traffic Collection is done at highway speeds, traffic is not slowed down

    19. January 10, 2005 2005 TRB Presentation Advantages of RetroView COST EFFECTIVE Reflectivity can be determined for all signs with a single pass of the vehicle Only 2 people are needed to collect data on thousands of signs daily compared to 80-100 daily via hand held devices Statewide assessment of sign reflectivity can be performed in months, not years Foreground and background sign reflectivity can be determined for all assets with the same data set

    20. January 10, 2005 2005 TRB Presentation Advantages of RetroView REPEATABLE RESULTS RetroView has accuracy of +/- 10% for reflectivity measurements TTI testing confirmed same results from multiple passes System mounted on same point on mobile platform, collecting from same point on vehicle for every sign System is efficient collecting consistent data at any posted speed limit

    21. January 10, 2005 2005 TRB Presentation RetroView Tentative Deployment Schedule December 2004 - Confirmed viability with testing at TTI Riverside Campus in College Station, TX Spring 2005 - Planning pilot project with Tennessee DOT Spring 2005 - Planning pilot project with Pharr District of Texas DOT Spring 2005 - Upgrade current RetroView system to include collection of Pavement Marking Retroreflectivity Summer 2005 - System available to collect RA on 100,000 signs per month

    22. January 10, 2005 2005 TRB Presentation For more information on RetroView and RetroCurve MANDLI COMMUNICATIONS, INC Contact Mitch Caya at 608.835.3500 Email: mcaya@mandli.com Visit www.mandli.com for a copy of this presentation and more background information on RetroView

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