Transcript Smart Work Zones Initiatives

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
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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
Traffic Control Field Reviews
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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
Traffic Control Field Reviews
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Purpose of Reviews
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Increase work zone safety awareness
Assess current practices
Identify reoccurring issues
Determine training needs
Develop or improve policies & procedures
Traffic Control Field Reviews
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Notify Regions
Drive-through and walk-through
Provide feedback
WZ review report
Traffic Control Field Reviews
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Review items included
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Overall traffic control
Quality of traffic control devices
Access for pedestrians, bicyclists, businesses
Flagging
Drop-offs
Traffic Control Field Reviews
Findings:
 Overall quality & effectiveness of traffic control
has improved
 Concerns:
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Poor quality/maintenance
Missing devices and/or poor placement/orientation
Access Issues
Flagging issues
Traffic Control Field Reviews
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Flagging Issues
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Poor operation, No escape route
Traffic Control Field Reviews
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Poor Visibility
Traffic Control Field Reviews
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Access Issues & ADA
Traffic Control Field Reviews
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Dropoffs
Traffic Control Field Reviews
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Non-Conforming Devices
Traffic Control Field Reviews
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Recommendations
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Need for flagger training
Address access issues during project staging
Use quality guideline for devices & compliance
2009 work zone reviews
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BHO & others will review work zones throughout the
construction season
Provide timely feedback and follow-up
Night Work Lighting
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Standard Specification for Artificial
Lighting
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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
Night Work Lighting
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Working to develop a pilot Special
Provision
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Lighting layout (light placement, mounting
height)
Glare control
Light level and uniformity
Aiming of fixtures
Work Zone Traffic
Management
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Work Zone Speed Limit Criteria
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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
Work Zone Traffic
Management
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Revising State Patrol Enforcement
Process
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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
Federal Work Zone Rule –
Subpart K
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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
Federal Work Zone Rule –
Subpart K
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Temporary barrier
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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
Federal Work Zone Rule –
Subpart K
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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
Federal Work Zone Rule –
Subpart K
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Enhanced traffic control and exposure control
measures – Examples:
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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
Enhanced Traffic Control
Measures
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Radar Speed
Display
Enhanced Traffic Control
Measures
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Temporary Rumble
Strips
Enhanced Traffic Control
Measures
I-94 near Eau Claire – Dynamic Lane Merge
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Shorten queue lengths before work zone
Increase traffic capacity through work zone
Reduce aggressive driving
Enhanced Traffic Control
Measures
I-94 near Eau Claire
 Wizard
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Broadcasts work zone information to truckers via Channel
19
Federal Work Zone Rule –
Subpart K
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Work vehicles and equipment
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Warning signs for work vehicle ingress/egress
Standard Detail Drawing – SDD 15D29
Standard Spec 107.9
Lights on vehicles
Federal Work Zone Rule –
Subpart K
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Maintenance of temporary traffic control
devices
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ATSSA Quality Guidelines for Temporary
Traffic Control Devices
Standard Spec 643.2.1
CMM 1.45.9.1
Acceptable
Marginal
Unacceptable
Federal Worker Visibility Rule
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All workers exposed to traffic or
construction equipment required to wear
high-visibility safety apparel
ANSI/ISEA 107-2004 Class 2 or 3
requirements
Lane Closures
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Lane closures addressed in TMP
documents
Project Special Provisions include lane
closure times, holiday & special event
restrictions, and notification provisions
Wisconsin Lane Closure
Planning System (LCS)
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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:
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All let projects
Any planned closures/restrictions on Corridors 2030
roadways
Major special events
Emergency closures resulting from incidents
Wisconsin Lane Closure
Planning System (LCS)
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Specific, accurate information needed
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Provides traveler information to 511 system
Used to determine issuance of Oversize &
Overweight Vehicle permits
Timeframes:
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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