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Arterial Travel Times Using Bluetooth Detection

This presentation by Amit Sidhaye, Project Manager for Signal Systems and ITS at Arlington County, provides an in-depth look at the implementation of a Bluetooth-based arterial travel time detection system. It covers the design and integration process, key applications, and lessons learned throughout the project lifecycle. The system aims to enhance traffic management and optimize signal operations by delivering accurate travel time data. Expected outcomes include better route choices and improved incident management. The presentation also addresses challenges, technology vendor involvement, and future applications.

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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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