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Work Zone & Incident Management in Wisconsin

Work Zone & Incident Management in Wisconsin. Process & Applications Michael S. Hardy Wisconsin D.O.T. 633 W. Wisconsin Ave, Suite 1200 Milwaukee, WI 53203 michael.hardy@dot.state.wi.us. 1) Process. Marquette Interchange Reconstruction. Outline.

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Work Zone & Incident Management in Wisconsin

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  1. Work Zone & Incident Management in Wisconsin Process & Applications Michael S. Hardy Wisconsin D.O.T. 633 W. Wisconsin Ave, Suite 1200 Milwaukee, WI 53203 michael.hardy@dot.state.wi.us

  2. 1) Process Marquette Interchange Reconstruction

  3. Outline • Project overview • Incident Management Planning for construction • Traffic Mitigation • Approach • Solutions • Future steps

  4. Reconstruction Overview • Downtown Milwaukee, Wis. • 1968: Interchange is dedicatedand is opened to traffic Dec. 23 • Today: • 5-level interchange • 300,000 vehicles per day • 120,000 downtown jobs • 7 million downtown visitors • Problems: • Structures are at end of useful life • High crash rates • Increasing traffic congestion

  5. Reconstruction Overview • Rebuild and realign entire interchange • Minimize construction time • 4 years (2004 – 2007) • Minimize impacts • Keep downtown “open for business” • Through movements will remain open • Some closures of freeway-freeway ramps • Closure of service ramps • Reduced number of lanes, speed, lane widths, shoulders

  6. The TIME program:A HEAD START

  7. Managing a Planned Incident • Traffic Mitigation Task Force - Proposals • Freeway operations and incident management • Public information • Transit and demand management(commuter options) • Local road operations

  8. Scenario-Based Operations Planning • Table-top exercises • Every day operation during construction • Major incident within interchange • Major incident on bypass • Major special events

  9. Table-Top Exercises • Multi-agency, multi-disciplined • Define conditions and assumptions • Verify roles and responsibilities • Identify problems and needs • Develop solutions

  10. Results/Proposals • Maintain freeway operations • Maintain “Monitor” FreewayTraffic Management System • Additional CCTV and detectioncoverage for interchange surveillance • Entrance-ramp meteringand improvements • TOC Night staff • Web page CCTV image-sharingwith stakeholder • FTMS system preservation contract –construction in 2003 prior to reconstruction

  11. Results/Proposals • Maintain freeway operations (alternate routes) • Signal re-timing, upgrades • Emergency vehicle preemption • Intersection improvements • Parking restrictions

  12. Results/Proposals • Emergency services/public safety • Crash investigation sites • Hydrant stand-pipes • Enforcement pads • Smaller fire-response vehicles • Additional freeway patrols • Revise SOP • Pre-positioned emergencytraffic control equipment • Full-time construction – public agency liaison

  13. Results/Proposals • Commuter options • Additional localand Freeway Flyerbus routes • Park-n-Rides • Free transfer programs • Transit-Fairs

  14. Results/Proposals • Travelerand public information • Business Survival Guide • Kiosks at major events • Web page for parking options • Brochures • Web page • Construction updates • Map your own travel route with real-time conditions • Alternate route “familiarization” tours

  15. Next Steps • Further refinement/prioritization of solutions • Funding (Steering Committee) • 20 mil / 210 mil • Implement some solutions this year • LET Contracts / Service Procurement • Interagency Agreements • Process review • Resources • Contract administration • Work Zone accountability

  16. 2) Application Travel Time Prediction SystemTraffic-Responsive Variable Message SignSystem Alan J. Horowitz, UW Milwaukee Thomas Notbohm, WiDOT

  17. Characteristics of Work Zone • I-94, south of Milwaukee County • 12 miles long • Normally 3 lanes, reduced to 2 lane + no shoulder • Normally 65 mph, reduced to 55 mph • Peak volume, 4000 vph • Queues sometimes exceed 2 miles • Frontage road for full length

  18. Characteristics of Signage System • “Travel Time Prediction System” • Commercial product (4 mo. Lease) • Detectors (volume + occupancy) • Desktop computer (field office) • Portable CMS • Radio communication between devices ( • No other reliable source of information about delays though the work zone • No information about alternative routes

  19. Characteristics of System Function • Display Travel Time to end of work zone, and distance to end of work zone • Travel time updates every 30 seconds • 4 minute intervals to control update frequency • 85% occurrence of predicted travel time within 30% of actual travel time • No other reliable source of information about delays though the work zone • No information about alternative routes

  20. TIPS Signand Sample Message

  21. SignDeployment • Location of TIPS • Detectors (5) • Signs (4, 2 Interstate) • Work zone

  22. Experimental Design • Before/After (70 days) • Entirely in the summer months, June 11 to August 19 • Virtually everything held constant, except: • Travel lanes open • Operation of the signs • Work zone in existence well ahead of data collection • Same counting devices (microwave, tube)

  23. Cutlines • B,C,D are TIPS • F-G are tubes • All data aggregated to 15 minute intervals

  24. Weekday 15-Minute Counts at Cutlines 3 hours each of four Thursdays and Fridays, before and after (96 samples before, 96 samples after)

  25. Sunday 15-Minute Counts at Cutlines 3 3/4 hours each of four Sundays before and 3 Sundays after (60 samples before, 45 samples after)

  26. Conclusion • A 10% alternative route selection rate during peak periods is achievable when accurate, up-to-the-minute, information about delay through a work zone is provided and there is an attractive set of alternative routes • No significant change in crash numbers compared to opposite direction, but observed reduction in injury frequency • More detection to increase accuracy

  27. 3) ApplicationWork Zone Speed Advisory SystemTom Notbohm, WisDOTScott Nelson, WisDOT

  28. WiDOT Project Layout – 4 Sensors, 3 VMS RTMS1 Mobile Control Unit RTMS RTMS2 VMS VMS1 RTMS3 RTMS4 VMS2 VMS3

  29. Characteristics • Display Speed of traffic and distance downstream in work zone • Speed reports will be • > 50mph, blank • 20-30, 30-40, 40-50, for respective range • ,20mph, STOPPED TRAFFIC AHEAD • Application starts May 5, 2003 • 2 other fixed incident CMS, and 6 portable project CMS

  30. Functional Block Diagram – 4 Sensors; 3 VMS MCU & RTMS1 Laptop With IntelliZone Software Internet VMS1 & RTMS2 Wireless Comm. to Internet = RTMS3 VMS 2 & RTMS4 VMS3

  31. Field Devices – US 41 RTMS1 RTMS2 RTMS3 RTMS4 MCU VMS1 Traffic Sensor Trailer VMS2 VMS3

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