The Basics of Temporary Traffic Control – What Every Contractor … · 2018. 2. 20. · The...
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The Basics of Temporary
Traffic Control – What Every
Contractor Should Know
James E. Bryden, PE
Federal Highway Administration, USDOTFederal Highway Administration, USDOT
Work Zone Safety and MobilityWork Zone Safety and Mobility
Final RuleFinal Rule
Updates to 23 CFR Section 630, Subpart JUpdates to 23 CFR Section 630, Subpart J
2009 Traffic Management & Work Zone Safety Conference
Orlando, Florida - March 11, 2009
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What is TemporaryTraffic Control - TTC?
TTC is the use of temporary traffic control devices, flaggers, police officers, and other safety devices and features to guide traffic through an area of a highway where road user conditions are changed by road work or an incident.
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Common Terminology
� TTC – Temporary Traffic Control � TTCZ - Temporary Traffic Control Zone� WZ – Work Zone� WZTC – Work Zone Traffic Control� TTCP – Temporary Traffic Control Plan� TTCD – Temp. Traffic Control Device� M&PT – Maintenance and Protection of Traffic
� MOT – Maintenance of Traffic
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Why should contractors care
about temporary traffic control?
(1)because it’s the right thing to do and
(2)because it’s profitable.
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Safety isCaring About People
“Everyone gets to go home at the end of the day.”
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Safety is Profitability
� Insurance costs
� Productivity and constructability
� Traffic impacts
� Liability
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How serious is the WZ Problem?
� 835 fatalities in 2007
� $4.4 B Annual Cost
� 75 workers killed by vehicles/equipment
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Objectives of TTC
� Safety – protect roadway users and workers
� Mobility – maintain traffic flow and minimize adverse
impacts associated with congestion, travel restrictions, and work activities
� Constructability – complete the project on time,
within budget, meeting quality standards
These are competing objectives – successful projects require a carefully considered balance of all three objectives.
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Good TTC Achieves Multiple Goals
� Movement of vehicles, bicycles, pedestrians
� Accommodates transit operations
� Provides access to property and utilities
� Protects workers and work operations
� Allows efficient completion of the work
Bottom line = reasonably safe & efficient movement of road users while protecting workers & completing work efficiently
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Roadway Users
� Motorists
� Bicyclists
� Pedestrians
� Includes persons with disabilities
� Adjacent properties owners must also be accommodated
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Fundamental Principles
� Essential part of highway work
� Minimize restrictions on road user movements
� Provide clear and positive guidance
� Routine day and night inspections
� Maintain roadside safety
� Provide adequate worker training
� Maintain good public relations
� TTC in place before work starts, removed when not needed
� Provide legal authority for WZTC
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TTC Standards & GuidanceWhere is it written?
� MUTCD
� AASHTO Policy on Geometric Design
� AASHTO Roadside Design Guide – Chapter 9
� FHWA Subpart J – WZ Safety and Mobility
� FHWA Subpart K – Temporary TCDs
� FHWA Part 634 – Worker Visibility
� FHWA Website – Roadside Hardware
� Highway Agency Standards, Specs, Plans & Proposals
� OSHA 1926
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Federal MUTCD
� 23 U.S.C. 109(d), 402(a) – national standard for all TCDs on any street, highway, or bike trail open to public travel.
� Each state shall be in substantial compliance
� Part 6 – Temporary Traffic Control
� TTCZ Devices – Signs, channelizing devices, others
� 46 Typical Applications� Chapter 6I – Traffic
Incident Areas
www.fhwa.dot.gov
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Common TTCDs
� Signs
� PCMS, APs
� Channelizing Devices
� Pavement Markings
� Lighting devices
� Temp. Traffic Barrier, Crash Cushions
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Typical Applications - TAs
TAs illustrate traffic control approaches for a variety of common WZ situations
� Illustrative examples – NOT standards
� TAs should be altered, when needed, to meet actual conditions
� MUTCD includes 46 TAs.
� TAs can be adapted, combined to address other situations.
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Traffic Control Plans
� TAs are a starting point
� Traffic Management Plans – complex projects
� Contract plans and specs provide additional details
� Most agencies provide standard details for TTC setups
� Contract plans often include detailed drawings
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Common WZ Myths
• Workers are at the greatest risk
• WZ intrusions are a big problem
• Excessive speed is our biggest problem
• Drivers are the enemy
• We can’t control WZ safety
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Key WZ Safety Staff
� CEO
� WZ Safety Program Director
� Executive managers/supervisors
� Project supervisors and foremen
� Project WZ Supervisor
� Individual workers
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Contractor Planning
� Work crew staffing plan
� Worker training
� Material availability
� Project Site Patrol
� Overhead power lines
� Emergencies and contingencies
� Operational restrictions
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Other Aspects of TTC
� TTC considered in bidding process
� Contractor partnering with owner agencies
� Participation in industry associations
� Support WZ safety advocacy efforts
� Insurance Co. support and services
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Helpful Websites
� http://www.fhwa.dot.gov/� http://mutcd.fhwa.dot.gov/� http://safety.fhwa.dot.gov/roadway_dept/road_hard
ware/nchrp_350.htm� http://safety.fhwa.dot.gov/wz/index.htm� http://www.transportation.org/� http://www.artba.org/� http://www.agc.org/� http://workzonesafety.org� http://www.atssa.com/� http://www.trb.org/� http://www.liuna.org/