niosh reports! studies on heavy equipment blind · pdf fileniosh reports! studies on heavy...
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NIOSH Reports! Studies on Heavy Equipment Blind Spots and Internal Traffic Control
Presented by
David E. FosbrokeNIOSH, Division of Safety
Research
2004 Roadway Work Zone Safety & Health Conference
Baltimore, Maryland
November 4, 2004
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Outline
BackgroundNIOSH ResearchWorker Deaths
Blind Area DiagramsInternal Traffic Control Plans
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Doug Ammons, Steve Berardinelli, Jennifer Beaupre, Dave Fosbroke, Chris Griffin, Robert Hammer, Mat
Hause, Scott Hendricks, Gary Mowrey, Brad Newbraugh, Kara Perritt, John Powers, Stephanie
Pratt, Justin Tolpa, Todd Ruff, Bill Schiffbauer
Evaluating Roadway Construction Work Zone Interventions
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Project Organization
State Transportation Departments
Construction Companies
Engineering Consultants
Labor Unions
Construction Trade Associations
Equipment Manufacturers
FHWA, OSHA
Roadway Work Zone Intervention EvaluationsMorgantown, WV
Worker Exposure Measurement
Blind Area Determination
Internal Traffic Control Plans
Site Access / Partnering
Case Definition
HSRB/OMB/Photo Release
Research Staff Safety
Pittsburgh, PAHASARD
Work Zone Analysis System
Spokane, WAProximity Warning Devices
Detection Zones
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The Problem
Preventing workers from being run over by construction trucks and equipment.
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The Project Goals
Limit exposure of workers-on-foot to construction traffic.Focus on blind areas around construction vehicles and equipment.
Develop exposure monitoring system(s)Evaluate injury prevention measures
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The Interventions
Proximity Warning SystemsInternal Traffic Control Plans
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Proximity Warning SystemsEvaluate off-the-shelf technology including:
RadarSonarCamerasTag-based systems
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Camera Systems
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Radar Sonar
Sensors
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Camera and RadarCamera
Radar
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Proximity Warning Systems: Data collection methods
Warning system alarms
• Video
• Alarm overlay
• Alarm data
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HASARD
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INTERNAL TRAFFIC CONTROL PLANSPaving Model Plan – Site #1
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Field TrialsDirect ObservationGPSVideo
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GPS Installed on Equipment including:Asphalt TrucksPaverRollers
GPS receivers worn by workers
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Vermont GPS Data Overlaid in Map Point
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Vermont GPS Data Paving Around a Rest Area
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910 worker deaths in work zones from 1992-2000 826 (91%) were vehicle or equipment-related (traffic vehicle, construction vehicle, or both)
Background: Worker Deaths in Work Zones
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Worker Fatalities in Roadway Construction
0
20
40
60
80
100
120
140
1992 1993 1994 1995 1996 1997 1998 1999 2000
Year
Dea
ths
Trend from 1992-2000 (n=910)
Source: Census of Fatal Occupational Injuries, special research file (excludes NYC)
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Worker Fatalities in Roadway Work Zones, by Vehicle Type and Year, 1992-2000 (n=797)
01020304050607080
1992 1993 1994 1995 1996 1997 1998 1999 2000
Year
Dea
ths Construction vehicle
Traffic vehicle
Both
Source: Census of Fatal Occupational Injuries, special research file (excludes NYC)
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Workers on Foot – Construction Vehicle Only
0 20 40 60 80 100 120
Other vehicle/other source
Other machine
Other/unspec truck
Excavating machine
Grading/surfacing machine
Semi-truck
Dump truck
Veh
icle
Deaths
Source: Census of Fatal Occupational Injuries, special research file (excludes NYC)
Deaths by Construction Vehicle Type, 1992-2000 (n=258)
41%
14.3%
14%
7.7%
10.4%
6.5%
6%
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Blind Areas
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Definition of Blind Area
A blind area is the area around a vehicle or piece of construction equipment that is not visible to the operators, either by direct line-of-sight or indirectly by use of internal and external mirrors.
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Vehicle Blind Spots
Running over people
Running over materials
Striking other equipment and vehicles
Rollovers
Contact with utilities
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Area of fullyobstructed view
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Non-Construction Vehicle Blind Spot Measurements
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MethodsInternational Organization for Standardization (ISO) 5006 Manual methods
Light BarOperator
Computer methodsDesign DrawingsLaser ScansPhotographs
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Manual Light Bar Method
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Dump Truck (Manufacturer and Model) Ford 880GVW 54,000 lbSerial # V00131Machine Dimensions 7' 10" wide 23' 2" longOperator Enclosure Closed ROPSAttachments NoneOther Information NoneMeasurement Technique Physical
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Blind Area Diagrams - Ford 880
Ground Construction Barrel Worker ~3ft partially bent over
~5ft
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Manual Operator Method
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Marking Blind Areas Within a Polar Grid
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Caterpillar 672CH Blind Area at 900mm above Ground Plane
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Blind Area Diagram Ford 880 Dump Truck
Not Visible to Operator
Visible in mirrors only
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Comparison of Manual Methods
Field Crew Light Bar
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Virtual Reality Method
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Blind Area DiagramsPhoto Generated Blind Areas
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Contract Deliverable
Center for Disease Control and Prevention
Contract 200-2002-00563
“Construction Vehicle and Equipment Blind Area Diagrams”
Final Report
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Blind Area DiagramsCaterpillar Contract
Shadow Method and Computer Generated Blind Areas
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Web Page of Blind Area Diagrams
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Internal Traffic Control Plans
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Why Develop an Internal Traffic Control Plan?
Coordinate vehicle/equipment movement inside the work zoneLimit exposure of workers on foot to construction trafficReduce hazards for equipment operators
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Definition of Internal Traffic Control Plans (ITCP)
“STRATEGIES TO CONTROL THE FLOW OF CONSTRUCTION WORKERS, VEHICLES AND EQUIPMENT INSIDE THE WORKZONE”
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Traffic Control Plans
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TCP – ITCP PARALLELSTCP
TYPICAL
RESPONSIBLEPERSON
REQUIRED BY MUTCD
ITCPMODEL
COMPETENTPERSON
CONCEPT
⇒
⇒
⇒
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PRINCIPLES OF SAFE CONSTRUCTION TRAFFIC CONTROL
Reducing the need to back up equipment Limiting access points to work zonesEstablishing pedestrian-free areas where possibleEstablishing work zone layouts commensurate with type of equipment
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Providing signs within the work zone to give guidance to pedestrians, equipment and trucksDesigning buffer spaces to protect pedestrians from errant vehicles or work zone equipment
PRINCIPLES OF SAFE CONSTRUCTION TRAFFIC CONTROL
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ITCP COMPONENTS
NOTES PAGE
LEGEND
WORK AREA DIAGRAMS
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NOTES PAGESAFETY POINTSPERSONNELEQUIPMENT
SAFETY POINTS
1. Truck spotter stays at paver
2. Stage trucks to minimize backing
3. No walking behind backing trucks, in front of paving machine, across hot mat, or over trailer tongue.
PERSONNELTruck DriversTruck Spotter
Paver OperatorRoller Operators
EQUIPMENTOiler Trucks
Dump TrucksPaversRollers
Inspector
SuperintendentTest Personnel
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Detailed Notes
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No workers in traffic zoneSpotter uses hands free radio to talk to trucksNo workers on foot between a backing truck and the paverTruck spotter remains at paver until truck stopsInspectors remain away from paving train and notify spotter before obtaining samples
Safety Points
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PEDESTRIAN-FREE ZONE
TRUCK MOVEMENT
DIRECTION OF TRAFFIC
DIRECTION OF TEMPORARY TRAFFIC OR DETOUR
CHANNELING DEVICE(S)
SIGN (SHOWN FACING RIGHT)
- On foot personnel classes -
OTHER CLASS
SURVEYORINSPECTOR
FLAGGERSPOTTER
FOREMANPEDESTRIAN WORKERP
D
I S
F
A
LIGHT(S)
BARRIER
PORTABLE LAVATORY
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WATER TRUCKOIL TRUCK
DUMP TRUCK (FULL)
DUMP TRUCK (EMPTY)
DOZER
BACKHOE
FRONT LOADERGRADER
PAVING MACHINEROLLER
OIL WATER
CRANE FORKLIFT
SWEEPER
- Vehicle Types -
BOTTOM DUMP
PICKUP TRUCK MILLING MACHINE
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Paving Model Plan – Traffic Adjacent
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Paving Model Plan –Site #1
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Paving Model Plan – Site #2 Ingress
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Paving Model Plan – Site #2 Egress
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STEPS IN PREPARATION OF ITCPSReview TCP and other contract documentsDetermine site-specific ITCP needsDraw work spaceAdd pedestrian and equipment pathsLocate staging areasPrepare notes and plan
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Internal Traffic Control Plans – QuestionsCan the need for backing be reduced or eliminated?Can the number of vehicle access points into the work space be reduced?Can pedestrian-free zones be established?Can the work space accommodate the equipment being used?Do any physical features of the site place operators at risk?
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Internal Traffic Control Plan: How-To GuideInternal Traffic Control PlanInternal Traffic Control Plan
Draft Development GuideDraft Development Guide
Internal Traffic Control Plans for Internal Traffic Control Plans for Asphalt Paving Operations Asphalt Paving Operations
On Freeway SegmentsOn Freeway SegmentsTask 8.1Task 8.1
Contract No. 200Contract No. 200--20022002--0059600596
Submitted to theSubmitted to the
CENTERS FOR DISEASE CONTROLCENTERS FOR DISEASE CONTROLand PREVENTIONand PREVENTION
CONTRACTS MANAGEMENT BRANCHCONTRACTS MANAGEMENT BRANCHSubmitted bySubmitted by
C.L. Williams Consulting, Inc.C.L. Williams Consulting, Inc.4720 W. Maverick Lane, Suite #1034720 W. Maverick Lane, Suite #103Lakeside, Arizona 85929Lakeside, Arizona 85929
June 19, 2003June 19, 2003
Revised Internal Traffic Control PlanRevised Internal Traffic Control PlanSite 2Site 2
Internal Traffic Control Plans forInternal Traffic Control Plans forAsphalt Paving Operations Asphalt Paving Operations
On Freeway SegmentsOn Freeway SegmentsTask 7.1Task 7.1
Contract No. 200Contract No. 200--20022002--0059600596
Submitted to theSubmitted to the
CENTERS FOR DISEASE CONTROLCENTERS FOR DISEASE CONTROLand PREVENTIONand PREVENTION
CONTRACTS MANAGEMENT BRANCHCONTRACTS MANAGEMENT BRANCHSubmitted bySubmitted by
C.L. Williams Consulting, Inc.C.L. Williams Consulting, Inc.4720 W. Maverick Lane, Suite #1034720 W. Maverick Lane, Suite #103Lakeside, Arizona 85929Lakeside, Arizona 85929
May 16, 2003May 16, 2003
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ITCP Concrete Plans
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Fatality Investigations
http://www.cdc.gov/niosh/face/faceweb.html
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Participating FACE States
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Example Fatality Cases Case 1:45-year-old boom truck driver run
over by dump truck that was backing during a repositioning maneuver.
Case 2: 31-year-old worker run over by front-end loader at the site of a crushing machine.
Case 3: 35-year-old laborer run over by dump truck at roadway resurfacing operation.
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Case 1
Minnesota Face Program (MN9207)
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Turn-around
Pav
er
Truck Line
Concrete Paving Operation Layout
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XX
Truck Line
Turn-around
New Truck
Last Truck
Truck Queue Repositioning
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Case 2
Minnesota FACE Program (98MN030)
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Original Site Layout
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Redesigned Site Layout
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Two-lane County Road -- Four-lane State Highway
Case 3
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Two-lane County Road
Paving Machine
RollerTruck
Victim’s Work Area
Victim
Flagger
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View from the Street
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View from Inside the Cab
Bug Shield
Stickers
Fan
Air Cleaner and Door Post
Mirror
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Evaluating Roadway Construction Work Evaluating Roadway Construction Work Zone InterventionsZone Interventions
Highway paving operations (probably major recon or new const)
Separated from traffic by more than cones and barrels
Asphalt paving
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Daytime operationControl and treatment sites being paved by different crewsRoom for research trailerThree weeks of paving at siteContractor and DOT cooperation
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