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Arterial Travel Times Using Bluetooth Detection

Arterial Travel Times Using Bluetooth Detection. Presented by Amit Sidhaye, P.E., PTOE Project Manager SIGNAL SYSTEMS & ITS ARLINGTON COUNTY. May 16, 2013. Presentation Overview. System Overview Design & Integration Process DMS Applications Lessons Learned.

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Arterial Travel Times Using Bluetooth Detection

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  1. Arterial Travel Times Using Bluetooth Detection Presented by Amit Sidhaye, P.E., PTOE Project Manager SIGNAL SYSTEMS & ITS ARLINGTON COUNTY May 16, 2013

  2. Presentation Overview • System Overview • Design & Integration Process • DMS • Applications • Lessons Learned

  3. How we got to where we are today… • System Engineering (2010) • RFI (December 2010) • System Design (2010-2011) • RFP (March 2012) • Construction (Ongoing) • Full Deployment (Summer 2013)

  4. RFI – December 2010 • No constraint on technology • Focus on Arterial experience • 3 vendors participation for demo • Add KHA RFI Details

  5. RFI Data Collection

  6. RFI Data Collection

  7. Project Flow

  8. First Deployment – Rt. 50 • Number of Detectors – 6 • Number of VMS – 2 • Communication – Fiber & Wireless • Corridor AADT – 57,500 • Location of server – Arlington County – Traffic Management Center (TMC) Lee Hwy – 5.3 miles Rt. 50 – 4.5 miles Col. Pike – 3.2 miles

  9. Bluetooth Travel Time System - Basics

  10. Arlington’s System • Vantage Velocity (Iteris) Bluetooth detectors • Daktronics Signs (w/ Vanguard Travel Time module) • Detectors on wireless modems and fiber

  11. Data Flow

  12. System Calibration • One size fits all approach may not work. • Consider variance, volume, and roadway characteristics.

  13. Data Sharing / Reporting • XML / CSV feeds • Web portal with map and report • Graphical report features

  14. DMS Messages • Updated every 3 minutes • Time stamped messages • No messaging during extreme off peak hours

  15. Early System Results • Good data for travel time analysis for 24 hour test • The # of matches from total matches from end-to-end in each direction was lower than expected based on the total number of matches for the individual segments. • Need adjustment of standard omni-directional antenna used at Rt. 50 & Glebe Rd.

  16. Application • Accurate Travel Time information • Signal Optimization – Before & After travel time runs • Alternate route choice • Regional integration • Incident management • Transit arrivals reporting • Origin-Destination data • Affects driver behavior

  17. Lessons Learned • Early IT department involvement • DMS infrastructure • Specifications follow up • Knowledgeable contractor • Back up support

  18. Questions? Contact: Amit Sidhaye, PE, PTOE (asidhaye@arlingtonva.us) Project Manager, Signal Systems & ITS 703-228-3730 Arlington County, VA

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