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Work Zone Traffic Management

Work Zone Traffic Management . Tom Notbohm Peter Amakobe Atepe Marie Treazise WisDOT Bureau of Highway Operations. Contractor – Engineer Conference January 21, 2009. Work Zone Traffic Management. Work Zone Field Process Review Findings Night Work Lighting

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Work Zone Traffic Management

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  1. Work Zone Traffic Management Tom Notbohm Peter Amakobe Atepe Marie Treazise WisDOT Bureau of Highway Operations Contractor – Engineer Conference January 21, 2009

  2. Work Zone Traffic Management • Work Zone Field Process Review Findings • Night Work Lighting • Work Zone Speed Limit Criteria & Speed Enforcement • Federal Work Zone Rules – Subpart K and Worker Visibility • Lane Closure System • Other initiatives and evaluations

  3. Traffic Control Field Reviews • Bi-Annual Reviews mandated by FHWA • Reviewed 46 projects in all Regions • Evaluated Plan requirement Vs. Actual • Participation from BHO, BPD, FHWA, and the Regions

  4. Traffic Control Field Reviews • Purpose of Reviews • Increase work zone safety awareness • Assess current practices • Identify reoccurring issues • Determine training needs • Develop or improve policies & procedures

  5. Traffic Control Field Reviews • Notify Regions • Drive-through and walk-through • Provide feedback • WZ review report

  6. Traffic Control Field Reviews • Review items included • Overall traffic control • Quality of traffic control devices • Access for pedestrians, bicyclists, businesses • Flagging • Drop-offs

  7. Traffic Control Field Reviews Findings: • Overall quality & effectiveness of traffic control has improved • Concerns: • Poor quality/maintenance • Missing devices and/or poor placement/orientation • Access Issues • Flagging issues

  8. Traffic Control Field Reviews • Flagging Issues • Poor operation, No escape route

  9. Traffic Control Field Reviews • Poor Visibility

  10. Traffic Control Field Reviews • Access Issues & ADA

  11. Traffic Control Field Reviews • Dropoffs

  12. Traffic Control Field Reviews • Non-Conforming Devices

  13. Traffic Control Field Reviews • Recommendations • Need for flagger training • Address access issues during project staging • Use quality guideline for devices & compliance • 2009 work zone reviews • BHO & others will review work zones throughout the construction season • Provide timely feedback and follow-up

  14. Night Work Lighting • Standard Specification for Artificial Lighting • To safely and adequately perform the work • To make the workers and construction operations visible to traveling public • Glare and brightness do not interfere with driver visibility

  15. Night Work Lighting • Working to develop a pilot Special Provision • Lighting layout (light placement, mounting height) • Glare control • Light level and uniformity • Aiming of fixtures

  16. Work Zone Traffic Management • Work Zone Speed Limit Criteria • Reduce 65-mph to 55-mph during lane closures & work operations • Reduce 55-mph multi-lane highways to 45-mph if AADT > 10,000, where lanes narrowed, severe lane shifts, work area close to traffic • Reduce 55-mph 2-lane rural highways to 45-mph if AADT > 7,000, where lanes narrowed, severe lane shifts, or road surface is degraded • Reduce 45-mph multi-lane highways to 35-mph if AADT > 10,000, where severe lane shifts, frequent driveways • Reduce 40-mph urban roadways to 30-mph where temporary road, gravel surface, severe lane shifts

  17. Work Zone Traffic Management • Revising State Patrol Enforcement Process • More flexible deployment agreements • Criteria based on traffic volume, lane closures, speed limit, project length, safety history, terrain, traffic composition, night work or traffic stoppages for work operations

  18. Federal Work Zone Rule – Subpart K • Uniformed law enforcement officers • Temporary barrier and other positive protection devices • Traffic control and exposure control measures • Work vehicles and equipment • Payment for traffic control • Maintenance of temporary traffic control devices

  19. Federal Work Zone Rule – Subpart K • Temporary barrier • Facilities Development Manual guidelines (FDM 11-50-35) • Construction & Materials Manual (CMM 1.45.9.4) • Standard Specs 104.6.1, 107.8, 107.14

  20. Federal Work Zone Rule – Subpart K • Traffic control and exposure control measures • Proposed Implementation Plan – developing revisions in response to industry concerns • Contained in Work Zone Transportation Management Plans (TMP’s) • TMP guidance in FDM 11-50-5

  21. Federal Work Zone Rule – Subpart K • Enhanced traffic control and exposure control measures – Examples: • Closer spacing of traffic control devices • Reduced speed zones • Radar speed displays • Temporary rumble strips & transverse markings • Off-peak work • Road/ramp closures & crossovers • Diverted traffic • Changeable message signs & ITS • CB Wizard • Public information • Dynamic lane merge

  22. Enhanced Traffic Control Measures • Radar Speed Display

  23. Enhanced Traffic Control Measures • Temporary Rumble Strips

  24. Enhanced Traffic Control Measures I-94 near Eau Claire – Dynamic Lane Merge • Shorten queue lengths before work zone • Increase traffic capacity through work zone • Reduce aggressive driving

  25. Enhanced Traffic Control Measures I-94 near Eau Claire • Wizard • Broadcasts work zone information to truckers via Channel 19

  26. Federal Work Zone Rule – Subpart K • Work vehicles and equipment • Warning signs for work vehicle ingress/egress • Standard Detail Drawing – SDD 15D29 • Standard Spec 107.9 • Lights on vehicles

  27. Federal Work Zone Rule – Subpart K • Maintenance of temporary traffic control devices • ATSSA Quality Guidelines for Temporary Traffic Control Devices • Standard Spec 643.2.1 • CMM 1.45.9.1

  28. Acceptable Marginal Unacceptable

  29. Federal Worker Visibility Rule • All workers exposed to traffic or construction equipment required to wear high-visibility safety apparel • ANSI/ISEA 107-2004 Class 2 or 3 requirements

  30. Lane Closures • Lane closures addressed in TMP documents • Project Special Provisions include lane closure times, holiday & special event restrictions, and notification provisions

  31. Wisconsin Lane Closure Planning System (LCS) • Web-based system for tracking closures and restrictions on freeways, expressways and other state highways • Developed by UW Traffic Operations and Safety Lab under direction of Statewide Traffic Operations Center • Single source of WisDOT roadway & lane closure information for: • All let projects • Any planned closures/restrictions on Corridors 2030 roadways • Major special events • Emergency closures resulting from incidents

  32. Wisconsin Lane Closure Planning System (LCS) • Specific, accurate information needed • Provides traveler information to 511 system • Used to determine issuance of Oversize & Overweight Vehicle permits • Timeframes: • 14 days – Project start, full roadway closure, or restriction of width, height, weight • 7 days – System ramp closure • 3 days – Lane and service ramp closure

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