Work Zone Mobility and Safety Program

Management of Traffic with Real Time Monitoring

slide 1: Management of Traffic with Real Time Monitoring

Lisa Zundel, P.E., Utah Department of Transportation

Work Zone Peer Exchange, May 2013

Utah DOT logo.

slide 2: Presentation Outline

  • Setting the Base Line
  • Determining Travel Time Thresholds
  • Development of Specification
  • Contracting
  • Future fo WZ Performance Measures

slide 3: Setting the Base Line

  • Minimum 1 week of Bluetooth data collection
  • Collect "Traditional" traffic data
  • Model
  • Calibrate Model with Bluetooth

Picture of a bluetooth roadside data collection device mounted on a road-side wall.

slide 4: Work Zone Scenarios

  • Development of WZ scenarios
    • Develop possible WZ set ups
    • Model anticipated WZ set ups
    • Collect model travel times

Chart depicting a vehicle decelerating as it enters a work zone with a lane closure, then accelerating after the lane closure.

slide 5: Thresholds

  • Development of WZ scenarios
  • Develop possible WZ set ups
  • Model anticipated WZ set ups
  • Collect model travel times

Movement Existing Average. (min) Warning (min) First Tier (min) Second Tier (min)
I-80 Eastbound 9.7 11.3 12.8 14.6
I-80 Westbound 9.7 11.3 12.8 14.6

slide 6: Development of Specification

  • Based off standard DB format
  • Additional required personnel for contractor
  • Removed prescriptive language added performance language
  • Performance measure incentives / disincentives

Non-Compliance with Delay Parameters
First Tier Violation per movement $1,000
Second Tier Violation per movement $2,500

slide 7: Specification Details

  • Safe & Efficient passage of traffic through WZ
  • Maintain vehicle mobility of facility and access at interchange locations
  • Correct all traffic control deficiencies immediately
  • Provide advance information to public regarding expected travel impacts

slide 8: Specification Details (cont.)

  • Contractor is responsible for maintaining required travel times
  • Traffic control plans must address peak and off-peak periods
  • Traffic restrictions shall not increase corridor travel times beyond the identified thresholds
  • Department will install and maintain the monitoring system

slide 9: Contracting

  • Night work exemption?
  • Realistic availability of lane closures
  • Exemptions for major work items
  • Emergency incidents
    • Documentation
  • Items not under contractor control

Snapshots of 3 workzone lane closures.

slide 10: Future of WZ Performance Measures

  • Department's continued support for implementation
  • Coordination with local AGC
    • Partnering is key
  • Help all stakeholders understand benefits

slide 11: Questions

Lisa Zundel, P.E.

UDOT Region 2

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