work zone traffic management tom notbohm peter amakobe atepe marie treazise wisdot bureau of highway...
Post on 28-Mar-2015
221 Views
Preview:
TRANSCRIPT
Work Zone Traffic Management
Tom NotbohmPeter Amakobe Atepe
Marie TreaziseWisDOT Bureau of Highway
Operations
Contractor – Engineer Conference
January 21, 2009
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
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
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
Traffic Control Field Reviews
Notify Regions Drive-through and walk-through Provide feedback WZ review report
Traffic Control Field Reviews
Review items included– 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:
– Poor quality/maintenance– Missing devices and/or poor placement/orientation– Access Issues – Flagging issues
Traffic Control Field Reviews
Flagging Issues– Poor operation, No escape route
Traffic Control Field Reviews
Poor Visibility
Traffic Control Field Reviews
Access Issues & ADA
Traffic Control Field Reviews
Dropoffs
Traffic Control Field Reviews
Non-Conforming Devices
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
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
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
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
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
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
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
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
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
Enhanced Traffic Control Measures
Radar Speed Display
Enhanced Traffic Control Measures
Temporary Rumble Strips
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
Enhanced Traffic Control Measures
I-94 near Eau Claire Wizard
– Broadcasts work zone information to truckers via Channel 19
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
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
Acceptable
Marginal
Unacceptable
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
Lane Closures
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)
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
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
top related