SNOW SENTRY TM The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM Problem Definition: LEDs Don’t Melt Snow I ncandescent bulbs have traditionally been used for traffic signal indications Majority of the power from an incandescent bulb is emitted as heat LEDs – benefit is a significant reduction of the power/maintenance therefore less costs Reduced heat from LEDs is considered a major factor in snow and ice build-up during Winter Solution required to protect against visual impairment caused by snow and ice on traffic signals The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM EVOLUTION Approached by a major Canadian City to design a snow solution device prior to them commencing their LED program Investigated the following: - Heater - Thermostat - Surface Coatings (Aircraft, Oil-based chemical, Rain-X, etc.) - Visors SNOW SENTRY TM The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM PROPOSED SOLUTION Model thermal characteristics of the incandescent signal: - bulb type - input voltage / power - duty cycle - filament position & orientation The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM PROPOSED SOLUTION The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM PROPOSED SOLUTION Reviewed heater design alternatives with manufacturers - Opacity - Watt density and total power - Material composition - Deformation - Cost - New signal/Retrofit signal The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM THE HEATER None of the previous designs met all the requirements of our model Designed an LED cap with a thermal film heater applied over the entire surface to melt/evaporate the snow and ice. The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM TEST RESULTS Tested thermal film heater in Environmental Chamber and Field Compared results with Incandescent Signal The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved. Incandescent – Top Heater - Bottom Heater

SNOW SENTRY TM Field test results were suboptimal Identified deficiencies and raised other issues FIELD TRIALS Tests in the chamber also revealed that the surface between lens and heater started to discolor with tiny bubbles The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM HEATER ISSUES - Unable to replicate the incandescent thermal model characteristics - Problems started to manifest - Discoloration - Deformation - Material type and composition - MMU / Conflict Monitor compatibility - Thermal Hysteresis control - Separate/Alternate Power source for heater - Increased Power consumption - Extend payback period The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

K.I.S.S. Principal Further analysis of the test data One problem source is the “ledge” formed by the visor’s bottom lip Prevent buildup using a clear convex shield that protrudes past the bottom lip BACK TO THE DRAWING BOARD The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved. SNOW SENTRY TM

A clear geometrically designed shield would guard the LED module from snow and ice; thus the name “SNOW SENTRY TM ” THE SOLUTION The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM Designed for multiple LED brands Impact Resistant Acrylic UV Stabilized Improves visibility Zero Power Low Maintenance Low Cost Installation Friendly (Retrofit & New) Lightweight Patent Pending Design The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM SNOW SENTRY ITE TESTING Independent lighting laboratory testing in 2009 and 2010 of the SNOW SENTRY installed on LED modules. Results from both tests showed “the Snow Sentry Shield appears to allow all the generated wavelengths of light to pass through with the same transmission.” Lighting Sciences The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM - Barrie, ON - Fredericton, NB - Green Bay, Wisconsin - Halifax, NS - Illinois DOT - Manitoba - Michigan DOT - Mississauga, ON - Minnesota DOT - Ottawa, ON - Penn DOT - Rockford, Illinois - Toronto, ON - York Region - Wisconsin DOT SAMPLE CUSTOMERS The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM Would you use this: Or this: The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM Manufactured in Canada by: Fortran Traffic Systems Limited 470 Midwest Road Toronto, ONM1P 4Y5 Tel: (800) The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.

SNOW SENTRY TM THANK YOU ITE AND USDOT The information contained herein is proprietary and confidential information of Fortran Traffic Systems Limited. Copyright ©2010 Fortran Traffic Systems Limited. All rights reserved.