The Sensysâ„¢ Wireless Vehicle Detection System

1. The Sensys™ Wireless Vehicle Detection System Advanced Technology For 21st Century Traffic Management

2. Agenda An introduction to the Sensys Wireless Vehicle Detection System • Introduction • Technology • Components • Accuracy • Conclusion

3. The Sensys™ Wireless Vehicle Detection System The next generation of vehicle detection technology

4. Applications Vehicle detection solutions for traffic monitoring & management • 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

5. Technology

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

7. Standards-Based Radio Communications Sensys has adopted standard radio technology • IEEE 802.15.4 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 802.15.4 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

8. Magnetometer-Based Vehicle Detection source: Honeywell

9. Fast & Easy Installation Fast Installation = Less $$$ • 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

10. A Complete Integrated Solution for Traffic Data Detection, data relay, data processing, and network management

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

12. Compatibility with Current & New Infrastructures Maximize legacy investment with future-proof technology • 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

13. Components Flush-Mount Wireless Sensor Access Point Repeater

14. Flush-Mount Wireless Sensors In-pavement sensors provide detection exactly where needed • 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

15. Sensys Access Point Access point relays sensor data to traffic controller or central servers • 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.)

16. Sensys Repeater Repeater relays sensor data to access point • 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

17. Radio Ranges Ranges will increase with new radio designs (Summer 2007)

18. Multiple Data Interfaces 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 IPconnectivity slide 17

19. Accuracy

20. Representative Count 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.

21. 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.

22. Conclusion

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

24. Sensys Advantages The Sensys Wireless Vehicle Detection System is the smart choice • 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

25. Sensys @ ITS America – Please visit us at Booth #534 to learn more!