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The Wisconsin DOT Mobile Probe Data Evaluation

The Wisconsin DOT Mobile Probe Data Evaluation. Steven T. Parker, Ph.D. Traffic Operations and Safety (TOPS) Laboratory University of Wisconsin-Madison. USDOT Probe Data Workshop II Philadelphia Marriott Downtown September 10-11, 2009. Outline. WisDOT Mobile Probe Data Overview

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The Wisconsin DOT Mobile Probe Data Evaluation

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  1. The Wisconsin DOTMobile Probe Data Evaluation Steven T. Parker, Ph.D. Traffic Operations and Safety (TOPS) Laboratory University of Wisconsin-Madison USDOT Probe Data Workshop II Philadelphia Marriott Downtown September 10-11, 2009

  2. Outline WisDOT Mobile Probe Data Overview Project Timeline Elements of the RFI and RFP Contract Awards and the Procurement Process UW TOPS Lab Evaluation Study Lessons Learned Contact Information

  3. WisDOT Probe Data EvaluationProject Objectives Compare two different traffic probe technologies Cell-phone based tracking Fleet-based GPS tracking Cover key intercity corridors Milwaukee - Green Bay Milwaukee – Madison Milwaukee – WI / IL State Line Evaluate effectiveness for control room operations Real-time link speed data Incident detection 511 traveler information

  4. WisDOT Probe Data EvaluationProject Management WisDOT Statewide Traffic Operations Center (STOC) WisDOT Probe Data Project Management ATMS, 511, Statewide Incident Notification UW-Madison Traffic Operations and Safety (TOPS) Lab RFI / RFP Development Two-Year Probe Data Evaluation Study Probe Data Archiving TransCore Acceptance Test Phase Management ATMS Integration

  5. WisDOT Probe Data EvaluationTimeline July 2006 – RFI Issued August 2006 – RFI Materials Due, One-on-One Meetings September 2006 – WisDOT RFP Issued October 2006 - Q&A Addendum, Proposals Due December 2006 – Contract Awards June 2007 – Inrix SAT / 30-Day Test August 2007 – Inrix Annual Service Agreement Starts September 2007 – AirSage SAT I February 2008 – AirSage SAT II June 2008 – AirSage Contract Discontinued September 2009 – Inrix Contract End-Date

  6. WisDOT Probe Data EvaluationElements of the RFI Facilitated by UW TOPS Lab Looking for Non-Infrastructure Solutions for: Roadway Link Speeds Enhanced Traffic Incident Detection Support for 511 Traveler Information Alternate Route Options Complement Connected Vehicle Options One-on-One Meetings In Conjunction with the 2006 ITE Annual Meeting and Exhibit in Milwaukee

  7. WisDOT Probe Data EvaluationElements of the RFI, Continued • RFI Sought to Clarify: • Reliability • Coverage • Privacy and Data Security • Licensing Issues • Time Frames • Use of Standards • Current or Future Projects • Business Models • Data Ownership • Data Packaging Options • Costs • Archiving Capabilities • Physical and Logical Architecture

  8. WisDOT Probe Data EvaluationElements of the RFP Predefined Intercity Corridors Mobile Oriented Probe Data Technologies Data Elements / Requirements Systems Acceptance Test (SAT) 30-Day Acceptance Testing Contracting Options

  9. WisDOT Probe Data EvaluationElements of the RFP Predefined Intercity Corridors I-90 / 94 – Waukesha to Madison – Interstate Only I-90 / 94 – Waukesha to Madison – Interstate Plus Alternate Routes * I-94 Milwaukee to WI / IL State Line I-94 Milwaukee to WI / IL State Line with Alternate Routes I-43 / US 41 – Milwaukee to Green Bay * Mobile Oriented Probe Data Technologies Non-Infrastructure Oriented Cellular Phone Based Monitoring Fleet Based GPS Monitoring

  10. WisDOT Probe Data EvaluationElements of the RFP Data Elements / Performance Requirements Near real-time link travel speeds 1 mile maximum link size (revised to 3 miles) 3 minute maximum reporting latency (revised to 10 minutes) 1 minute reporting frequency +/- 5 mph from “actual” link speeds Incident detection Sudden speed fluctuations 911 spikes Optional: highway work zone monitoring Some overlap with existing infrastructure for evaluation purposes

  11. WisDOT Probe Data EvaluationElements of the RFP Systems Acceptance Test (SAT) XML Data Frequency System Time-Out XML Schema Test Speed Accuracy Test Link Size Test Travel Time Test Documentation

  12. WisDOT Probe Data EvaluationElements of the RFP 30-Day Acceptance Testing Independent Drive Tests Control Room Map Observations Frequency, Accuracy, Completeness Flexible Contracting Options Annual Service Fee Start-Up Cost 2 Year Contract, Renewable

  13. WisDOT Probe Data EvaluationContract Awards AirSage Cellular Phone Based Monitoring I-90/94 Milwaukee-Madison – Interstate Plus Alternate Routes Monthly Payments After SAT Inrix Fleet-Based GPS Monitoring I-43 / US 41 Milwaukee-Green Bay Start-Up Payment + Monthly Payments After SAT

  14. WisDOT Probe Data EvaluationPredefined Intercity Corridors Above: I-90/94 Interstate with Alt. Routes (181 miles), Right: I-41 / US 43 (243 miles)

  15. Procurement Process - Issues RFP Selection and Contracting Process TOPS recusal from RFP selection process due to potential conflict of interest Rejoined project for SAT and evaluation study AirSage SAT Performed two SATs (Sep. 2007, Feb. 2008) Main issues: Link travel speeds Incident, weather (flooding) detection Need to refine / amend the performance requirements Required +/- 8mph on 95% links based on 3-car drive test

  16. Procurement Process – SAT Project Team Roles WisDOT – Project Leader TransCore – Certification TOPS Lab – Data Analysis Data Analysis Tasks Refining performance requirements Making sure everyone was on the same page Independent verification of the data (incidents, flooding, drive tests) Reviewing raw data from probe data provider Clearly defining next steps TOPS Lab’s Role Data analysis became primary issue in SAT Occasionally communicated directly with probe data provider

  17. Evaluation Study Objectives Evaluate performance of mobile probe data systems against RFP requirements Comparative analysis between two different technologies * Two year study * Focus Does the probe data add value to the STOC? Real-time link speeds on control room map Real-time incident detection Major weather events (flooding, snow) Highway work zone conditions Other Incorporate probe data into ITS (detector data) archive

  18. Evaluation Study - Continued Status SAT experience re-focused scope of evaluation study Incident, weather, and work zone detection, i.e., non-free flow conditions Limited to one data provider Second year of evaluation study not funded Final report under development Issues Incident detection Onset Duration Clearance Probe data (sampling methods) Short-term events Longer-term full freeway closure events

  19. Lessons Learned University as neutral partner RFP selection process, SAT process, data archiving / systems evaluator Annual fee vs. start-up cost payment options AirSage experience Clarifying performance requirements AirSage experience Early adoption Inrix experience Evaluation Study Extended SAT vs. independent evaluation Complex Process Contracting, deployment and systems integration, archiving, evaluation

  20. WisDOT Probe Data Contact Information Steven Parker TOPS IT Program Manager University of Wisconsin-Madison sparker@engr.wisc.edu (608) 265-4921 Doug Dembowski STOC Supervisor Wisconsin Department of Transportation douglas.dembowski@dot.wi.gov (414) 227-2149

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