Copyright © 2007 Sensys Networks, Inc. ALL RIGHTS RESERVED. Sensys and the Sensys logo are trademarks of Sensys Networks, Inc. Other product and company names and logos may be the trademarks of their respective owners. The Sensys™ Wireless Vehicle Detection System Advanced Technology For 21 st Century Traffic Management

slide 1 Agenda Introduction Technology Components Accuracy Conclusion An introduction to the Sensys Wireless Vehicle Detection System

slide 2 The Sensys™ Wireless Vehicle Detection System The next generation of vehicle detection technology

slide 3 Freeway/arterial monitoring Freeway ramp management Traffic signal control (intersection management) –Stop bar detection –Advance detection (traffic calming; dilemma zone protection) –Adaptive traffic signal control Planning & asset management Traveler information systems Applications Vehicle detection solutions for traffic monitoring & management

slide 4 Technology

slide 5 Breakthrough Technology NEW GENERATION OF POWERFUL RF CHIPS NEW GENERATION OF HIGHLY INTEGRATED SENSORS PATENT-PENDING SENSYS NETWORKS TECHNOLOGIES Low-power networking Low-power circuitry Reliable radio comms Signal processing Mechanical design 10-year battery life Installs in less than 10 minutes Self-calibrates & self-configures Individually addressable Firmware upgrades over-the-air SMART IN-PAVEMENT WIRELESS SENSOR Sensys has innovated a new vehicle detection solution

slide 6 Standards-Based Radio Communications IEEE PHY – used by ZigBee and other wireless systems –Data rate of 250 kbps used by Sensys –16 frequency channels in the 2.4 GHz ISM band Sensys NanoPower (SNP) protocol –Operates on top of PHY as Media Access Protocol (MAC) –TDMA scheme allocates time slots for each sensor’s transmission –Access point acknowledges reception; each sensor re-transmits data is unacknowledged Sensys has adopted standard radio technology

slide 7 Magnetometer-Based Vehicle Detection source: Honeywell

slide 8 Fast & Easy Installation Each flush-mount sensor is installed using a hammer drill or core drill –4” / 10 cm diameter hole –2 ½” / 6 cm deep –Covered with fast-drying epoxy Less than 10 minutes install time per sensor Minimal lane closure time Fast Installation = Less $$$

slide 9 A Complete Integrated Solution for Traffic Data Detection, data relay, data processing, and network management

slide 10 A Wealth of Detection Data Volume Speed Occupancy Presence Gap Headway Length classification Queue length Vehicle detection data for any application

slide 11 Compatibility with Current & New Infrastructures Roadside traffic controllers Current and future Traffic Management Center(s) via native IP Simultaneous data routing to traffic controller and Traffic Management Center, as desired Inductive loops and other deployed detection technologies –Same logical connections used by inductive loops can be used by Sensys wireless sensors –Broken detectors can be replaced with Sensys wireless sensors, operating alongside existing detection technologies Maximize legacy investment with future-proof technology

slide 12 Components Access PointRepeaterFlush-Mount Wireless Sensor

slide 13 Flush-Mount Wireless Sensors Installs in small hole using hammer or core drill in less than 10 minutes Rugged mechanical design 10 years of battery life Auto-calibration Reliable 2-way radio comms to access point – uniquely addressable In-pavement sensors provide detection exactly where needed

slide 14 Sensys Access Point Installs in minutes No calibration or adjustment required Processes, stores, and/or relays sensor data (Linux OS) –Contact closure to traffic controller –IP (fiber or cellular) to central servers Supports as many sensors as necessary Can serve as IP router for peripherals (video cams, etc.) Access point relays sensor data to traffic controller or central servers

slide 15 Sensys Repeater Battery-powered unit Supports up to 10 wireless sensors Relays detection data back to access point, extending range Supports mid-block detection – no trenching required Repeater relays sensor data to access point

slide 16 Radio Ranges Ranges will increase with new radio designs (Summer 2007)

slide 17 Multiple Data Interfaces slide 17 Vehicle detection data delivered as needed Contact closure interface to roadside traffic controller –Type 170 –NEMA TS1 –NEMA TS2 –Type 2070 ATC IP connectivity to ITS facilities –Traffic Management Centers, Traveler Information Systems, etc. –Wired or wireless connectivity Simultaneous connectivity to both, as required wired or wireless IP connectivity

slide 18 Accuracy

slide 19 Representative Count Accuracy source: CCIT, “Innovative Transportation Products and Services: Evaluation of Wireless Traffic Sensors,” Final Report, October CCIT study: I-80; Emeryville, CA; Oct 2006

slide 20 Representative Speed Accuracy CCIT study: I-80; Emeryville, CA; Oct 2006 source: CCIT, “Innovative Transportation Products and Services: Evaluation of Wireless Traffic Sensors,” Final Report, October 2006.

slide 21 Conclusion

slide 22 New Loops or New Sensys Wireless Sensors? Side-by-side installation in Scottsdale, AZ (Loop 101) Sensys installed in 1/10 th the time Sensys installed with 1/4 th the crew Sensys tested to be just as accurate as loops (but with better reliability) Sensys wireless sensors inductive loops

slide 23 Sensys Advantages Flexible technology – one platform for all vehicle detection needs High accuracy – comparable to well-maintained inductive loops… Superior reliability – …but without the problems of loops Low life-cycle cost – simple installation, long operational lifetime The Sensys Wireless Vehicle Detection System is the smart choice

slide 24 ITS America – Please visit us at Booth #534 to learn more!