Narrow and No Shoulder Sign Placement...Current Solutions • Mobile patterns using a TMA or...
Transcript of Narrow and No Shoulder Sign Placement...Current Solutions • Mobile patterns using a TMA or...
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National Work Zone Management Conference
Narrow and No Shoulder Sign Placement
Matthew Briggs September 21th, 2016
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Narrow and No Shoulder Sign Placement
Scenario Description • Installing, maintaining and removing signs
• Problematic for workers, drivers and engineers
• PA: Large maintenance organization and fleet
• Technology has helped with TMAs and temporary
and permanent message boards
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Narrow and No Shoulder Sign Placement
Problematic Situation • Exposure in narrow medians with little or now
shoulders = potential catastrophic accidents
• Maintaining and removal = Increased exposure
• Long-term median signs tend to be hit
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Narrow and No Shoulder Sign Placement
Inter-Connected Issues • Culture Clash – Old School* vs. Distracted Era
• Sign Placement – Alternate Applications
• TMA Operator Safety – Autonomous TMAs • Determining Lateral Clearance Thresholds
• Worker and Motorist Safety
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Narrow and No Shoulder Sign Placement
Old School* - Past Methods
• Workers would wait for breaks in traffic to run across the roadway
• NOT an acceptable method - OSHA citable offense – Situation not addressed in the MUTCD
• Union-based issues and PA is not an OSHA state
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Narrow and No Shoulder Sign Placement
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Narrow and No Shoulder Sign Placement
• 1980’s Video Game – released in June 1981
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Narrow and No Shoulder Sign Placement
Current Solutions • Mobile patterns using a TMA or multiple TMAs
• Still having frequent impacts, Vehicles vs. TMA
• ATSSA’s newly developed TMA Driver Training
• Narrower signs and eliminating the signs
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Narrow and No Shoulder Sign Placement
Consideration • MUTCD allows for the elimination of TTC signs
when space restricts their placement
• Unclear on the alternate solution guidance for supplementing the right shoulder signage
• Develop standards for narrow signs for when median signs are placed
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Narrow and No Shoulder Sign Placement
Challenges Ahead • Culture change for workers and motorists
• Expanded TMA Driver Training – Operational
• Policy Development / Objective Guidance
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Narrow and No Shoulder Sign Placement
Supplemental Safety Toolbox • Expand message board deployment • Develop new messages to be displayed • Eliminate median signs when shoulder is under X
feet in width – FHWA Concurrence • Enhance right shoulder signage • Implement new technologies • Enhance media outreach
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Narrow and No Shoulder Sign Placement
Benefits: • Reduced Exposure • Reduced Time • Eliminates the
Narrow Median Issues
Challenges: • Outside Lane Line
of Sight Blocked • Weaving Traffic
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Narrow and No Shoulder Sign Placement
Benefits: • Worker Safety • Motorist Safety • Quicker Set-ups and
Tear Downs (15 Min.) • More Work
Time=Less Closures
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Narrow and No Shoulder Sign Placement
Challenges: • Communication • Queue • Traffic Volumes • On-Ramp Traffic • Potential Bottleneck • Secondary Impacts • Distracted Drivers
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Narrow and No Shoulder Sign Placement
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Narrow and No Shoulder Sign Placement
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Narrow and No Shoulder Sign Placement
• Culture Change from the ‘80’s Arcade Game Decade to the Current State of Distracted Driving
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Narrow and No Shoulder Sign Placement
PennDOT Specifics • P3 – Rapid Bridge Replacement project (558)
• Nov. 2013 – State Transportation Bill
• Improving WZ Safety is a top priority (ASE) • “Doing Nothing is NOT an Option” – 02/05/15
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Narrow and No Shoulder Sign Placement
Next Steps… • Identify national “Best Practices”
• Multi-DOT and trade association collaboration
• Develop a national standard recommendation
• NCUTCD TTC submission for MUTCD inclusion
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Narrow and No Shoulder Sign Placement
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Narrow and No Shoulder Sign Placement
• Matthew Briggs, Manager • Temporary Traffic Control Unit • Pennsylvania DOT • 717-783-6268 • [email protected]