Dump truck-related deaths in construction, 1992–2007
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Transcript of Dump truck-related deaths in construction, 1992–2007
AMERICAN JOURNAL OF INDUSTRIAL MEDICINE 55:450–457 (2012)
Dump Truck-Related Deaths in Construction,1992–2007
Michael McCann, PhD, CIH� and Mei-Tai Cheng, MS
Background Dump trucks are universally used in construction and other industries tohaul materials to the location and to remove waste materials.Methods The source for dump truck-related fatality data was the Bureau of LaborStatistics Census of Fatal Occupational Injuries (CFOI) Research File.Results From 1992 to 2007, 829 construction workers were killed in dump truck-relat-ed incidents nationwide. Of those, 336 were dump truck operators with 215 deathsoccurring in street and highway incidents. Another 343 deaths involved workers onfoot, three-quarters struck by dump trucks. Sixty-four of the construction workers killedwere maintaining dump trucks, 22 when caught between the truck frame and a fallingdump truck bed. Of the 86 other deaths, 55 involved streets and highways.Conclusions Recommendations include: (i) improving the reporting of seat belt usagein fatality reports; (ii) requiring use of seat belts; (iii) requiring the use of backupalarms, spotters, or other methods to alert dump truck operators to workers in theirblind spots; (iv) prohibiting direct dumping at river banks and embankments; (v) usingcameras or radar to enforce stopping at railway crossings; and (xi) enforcing workersafety practices (e.g., lockout/tagout procedures on elevated dump truck beds). Am. J.Ind. Med. 55:450–457, 2012. � 2011 Wiley Periodicals, Inc.
KEY WORDS: surveillance; struck by; caught in/between; seat belts
INTRODUCTION
This report is a descriptive analysis of dump truck-
related fatalities in construction from 1992 to 2007. It is
based on the most currently available surveillance data
from the Bureau of Labor Statistics (BLS) Census of Fatal
Occupational Injuries (CFOI) Research File. This report
characterizes the source of injury, causes, and contributing
factors associated with fatal injuries in construction over
time. This more detailed examination targets dump trucks
because previous research on heavy equipment and
trucks in construction identified dump trucks as a major
factor in construction fatalities [McCann, 2006]. This re-
port addresses National Occupational Research Agenda
(NORA) construction Intermediate Goals 3.0 on reducing
struck-by injuries and fatalities and 3.3 on reducing work-
er exposure to being run over by vehicles (http://www.
cdc.gov/niosh/nora/comment/agendas/construction/pdfs/
ConstOct2008.pdf), and NORA transportation Intermedi-
ate Goals 1.9 on implementing a surveillance system on
truck drivers and 1.10.1, 1.10.2 on preventing injuries to
truck drivers due to vehicle crashes (http://www.cdc.gov/
niosh/nora/comment/agenda/agendas/transwareutil/pdfs/
TransWareUtilAug2009.pdf).
Dump trucks are universally used in construction and
other industries to haul materials to the location and to
remove waste materials. They travel both on streets and
highways and off the road. Dump trucks are of two basic
varieties: end-dump truck bodies where the dump box is a
1CPWR�The Center for Construction Research and Training, Silver Spring,MarylandContract grant sponsor: National Institute for Occupational Safety and Health, NIOSH;
Contract grant number: 1U54OH008307.Disclosure Statement: The authors report no conflicts of interests.Part of this study was done in partial fulfillment of the requirements for an M.S. degree
in the Environmental and Occupational Health Sciences trackof the Urban Public Health Pro-gram at Hunter College.
*Correspondence to: Michael McCann, PhD, CIH, CIH CPWR�The Center for ConstructionResearch and Training, 8484Georgia Avenue, Suite1000, Silver Spring,MD20910.E-mail: [email protected]
Accepted 29 September 2011DOI10.1002/ajim.21028.Published online 23November 2011inWiley Online Library
(wileyonlinelibrary.com).
�2011WileyPeriodicals,Inc.
part of the truck and elevates to dump contents through
the end; and trailer dumping rigs where the dump box is
hitched to a regular dump truck, tractor, or other vehicle.
Trailer dumping rigs can be either end dump, where
unloading occurs through the end of the trailer, or belly
dump where unloading occurs through gates on the bottom
of the trailer. Sizes of dump trucks can vary from as little
as a couple of tons to over 140 tons for mining dump
trucks.
A review of the literature on dump truck-related inju-
ries identified seven studies, mostly focused on mining
dump sites, streets and highways, and traffic work zones.
The most extensive was a National Institute for Occupa-
tional Safety and Health (NIOSH) study of dump truck-
related fatalities and lost-time injuries at mining dump
sites from 1988 to 1997 [Turin et al., 2001]. This study
identified 370 serious injuries, including 26 fatalities. Inju-
ries involving dump trucks were responsible for an aver-
age of 50 lost workdays compared to 33 lost workdays
involving other mobile mining equipment. Over 90% of
the serious injuries involved stationary dumping or oc-
curred while the dump truck was backing up. Moreover,
in 10 of 11 deaths, where the operator landed outside the
cab, the seat belt was not fastened. In fact, according to a
study published by the Federal Motor Carrier Safety Ad-
ministration (FMCSA) in 2003, single trailer dump truck
operators had the lowest safety belt usage rate �26%,
compared to an average of 48% for all commercial motor
vehicle drivers [Knoblauch et al., 2003].
A NIOSH study using Bureau of Labor Statistics
(BLS) Census of Fatal Occupational Injuries (CFOI) data
identified 492 traffic work zone deaths from 1992 to 1998
[Pratt et al., 2001]. Of these, 94 deaths (one-fifth) involved
workers on foot struck by work zone trucks A CFOI
study of traffic work zone deaths from 1992 to 1999 by
CPWR—The Center for Construction Research and Train-
ing identified 88 worker on foot deaths involving backing
vehicles, half involving dump trucks [CPWR, 2002,
p. 39]. Of these deaths, 20% occurred while directing con-
struction vehicles or flagging traffic.
A NIOSH literature review identified 495 work-related
highway deaths involving dump trucks between 1992 and
2000 using CFOI data [Pratt, 2003]. This was 1.7% of the
total number of work-related highway deaths for that peri-
od. An additional study conducted by the National High-
way Transportation Safety Board (NHTSB) using the
Fatality Analysis Reporting System (FARS) identified 1,403
work-related roadway deaths in the US construction indus-
try from 1992 through 2001 [Pratt, 2004]. Of these, 167
were related to dump truck roadway crashes.
A CFOI study of heavy equipment and truck-related
deaths in the excavation work industry (SIC 1794) identi-
fied 253 deaths from 1992 to 2002 [McCann, 2006]. This
included 33 deaths caused by dump trucks, occurring
mostly to workers on foot who were struck by the dump
truck.
Finally, the NIOSH Fatality Assessment and Control
Evaluation (FACE) Program evaluated 24 deaths involving
dump trucks from 1992 to 2007 (available at http://
www.cdc.gov/niosh/face/). The NIOSH case reports in-
cluded 6 deaths of dump truck operators from overturns,
striking overhead power lines, run over by the driver’s
own dump truck, an incident where the driver was caught
in /between the dump truck bed and box, and a case in-
volving hot asphalt which killed a worker when the tail-
gate opened. There were also 15 deaths of workers on
foot, including 12 cases of workers struck by dump trucks
(10 involving a backing dump truck), an overhead power
line contact electrocution, a worker caught in/between a
dump truck bed and box, and a worker pinned between a
dump truck and another vehicle; and three maintenance
workers caught in/between the dump truck bed and box.
This current report analyzes dump truck-related fatali-
ties focused on the construction industry from 1992 to
2007. This analysis updates previous research and pro-
vides a more extensive analysis of dump truck-related
deaths in construction. It also provides more extensive rec-
ommendations for interventions to reduce the number of
these fatalities.
MATERIALS AND METHODS
The source for dump truck-related fatality data was
the BLS CFOI Research File. BLS relies on the states to
collect data on fatalities for the CFOI.
Construction industry fatality data for the 2-digit
Bureau of Labor Statistics (BLS) Standardized Industrial
Classification (SIC) Codes 15, 16, and 17 for 1992
through 2002 and the North American Industry Classifica-
tion System (NAICS) Sector 23 for 2003–2007 were iden-
tified in the CFOI database. The resulting data were
entered into Microsoft Excel 2003 database for analysis.
Deaths related to dump trucks were primarily identi-
fied by selecting all records with the Source or Secondary
Source code of 8252 (Dump trucks). The source of injury
or illness identifies the object, substance, bodily motion,
or exposure which directly produced or inflicted the previ-
ously identified injury or illness. The secondary source of
injury or illness identifies the object, substance, or person
that generated the source of injury or illness or that con-
tributed to the event or exposure. A total of 783 records
were identified, 663 with dump trucks as the primary
source, and 120 as the secondary source.
A key word CFOI search using the term ‘‘dump
truck’’ of the narratives identified another 46 cases where
neither the source nor secondary codes were 8252. This
yielded a total of 829 dump truck-related deaths in con-
struction for the time period 1992–2007.
Dump Truck Deaths in Construction 451
Dump truck deaths were analyzed by age, time with
employer (TIE), and employee status (e.g., wage and sala-
ry, self-employed). For purpose of analysis, the following
CFOI age groups were combined: 1 (age <16) and 2 (age
17–19); and 3 (age 20–24) and 4 (age 25–34).
CFOI narratives and location codes were used to deter-
mine where the fatality occurred. The locations of deaths
were grouped into construction site, street and highway,
and other locations. Construction site incidents include
those occurring in traffic work zones, as well as other types
of construction sites (e.g., building construction, bridge
construction). Street and highway incidents include those
occurring on or adjacent to the road while traveling from
one location to another, including driving, parking at side
of road, walking on road, etc. Other locations include
garages, parking lots, quarries, industrial yards, etc.
Based on the CFOI narratives and activity codes of
the dump truck-related deaths (Table I), fatalities were
grouped by the researcher into the following four worker
activity categories: operating dump trucks, worker on foot,
maintaining dump trucks, and other worker (e.g., driver of
other vehicle, passenger). These worker activity categories
involve groupings of related activity codes.
The following sections provide both descriptive and
comparative analyses (e.g., between previously described
worker activity categories). The data presented are based
on proportions not rates because of the lack of denomina-
tor data. The total number of dump truck operators and
the number of workers performing particular construction-
related activities (e.g., number of workers on foot) is not
available using CFOI data or any other current available
statistics. A linear regression model (using the least-
squares method) was used to identify trends in dump
truck-related deaths by year.
RESULTS
Demographics
From 1992 to 2007, a total of 829 construction work-
ers were identified in dump truck-related fatal incidents
nationwide, an average of 52 deaths per year.
Occupations
Table II shows the major occupations of workers
killed in dump truck-related deaths by worker activity.
Truck drivers (dump truck operators whose occupation
was truck driver) comprised one-third of the fatalities (295
deaths). Almost half of the 318 workers on foot who
died on construction sites were construction laborers.
One-third of the 44 workers who died while maintaining
dump trucks also operated the dump trucks they were
maintaining.
Age
Table III shows the distribution of dump truck-related
deaths by age groups. Workers aged 20–34, 35–44, 45–54
and over 55—each accounted for one-quarter of the
deaths. There was no appreciable difference between age
groups by worker activity or between construction site and
streets and highways.
Other
Of the total number of dump truck-related fatalities,
89% were employed by contractors, eight percent were
self-employed, and three percent were categorized as other
(this included 14 deaths of individuals working in family
businesses). Fifteen percent worked <1 year on the job;
however, data were missing for job duration for one-third
of the cases.
Location of Deaths
Dump truck-related deaths were grouped by the re-
searcher into three general categories by location of the
deaths: construction site, street and highway, and other
locations (Table IV). Figure 1 shows the pattern of street
and highway and construction site dump truck-related
deaths of construction workers by year. The data were an-
alyzed using the F-test for simple linear regression. For
the 484 construction site deaths (58% of the total popula-
tion), the R2 was 0.0326 (P > 0.05), for the 281 street and
TABLE I. WorkerActivity Classifications
Classification Workeractivity
Operatingdumptrucks Thedriverof thedumptruck involved in thedeath.This includesdriversonor in thedumptruckandon foot aroundthedumptruckWorkeron foot Aworkerkilled in a dumptruckincidentwhowasnotnecessarily involvedwithdumptruckactivities (e.g.,wasworkingonsome-
thingelsewhenhewasstruckbythedumptruck),orwhowasworkingondumptruck-relatedactivities(e.g.,directing,flagging)Maintainingdumptrucks Amechanic,dumptruckoperator,ormiscellaneousworkerwhowaskilledwhile doingmaintenanceactivitieson thedumptruckOtheractivity Adriverofanother vehicle, apassenger in another vehicle, apassenger in thedumptruck,oraworkeron thedumptruckwhowas
killed in a dumptruckrelated incident
452 McCann and Cheng
highway deaths (34% of the total population), the R2 was
0.2818 (P < 0.05). The pattern indicates an increase in
the number of street and highway deaths from 1992 to
2007, but no major change in the number of construction
site deaths over time. The remaining 64 deaths (8% of the
total population) occurred in other locations such as
garages or parking lots.
Table IV shows the causes of dump truck-related
deaths according to worker activity, as previously described.
Construction site deaths, street and highway deaths, and
deaths at other locations are discussed, respectively.
Construction site deaths: Operatingdump trucks
Of the 96 operating dump truck deaths on construc-
tion sites, half involved the dump truck operator on foot
around the dump truck. One-third of the operators on foot
were struck by their own dump truck and one-third were
struck by other vehicles while working around their dump
truck. Dump truck operators on foot were engaged in a
variety of activities such as checking dump truck position,
checking tires, checking the dump truck bed, etc.
Other causes of dump truck operator deaths on con-
struction sites included: 19 dump truck overturns (20% of
total dump truck operator deaths) and 17 electrocutions
when the dump truck bed contacted an overhead power
line (18%). Half of the overturns involved the dump truck
going over embankments or hills, resulting in fatal ejec-
tions or being crushed by the dump truck.
Construction site deaths:Workers on foot
Of the 318 workers on foot killed on construction
sites, just over three-quarters were struck by dump trucks
on construction sites. Of these, two-thirds involved dump
trucks that were backing up. In two-fifths of these cases,
the worker on foot was directing the dump truck or other
traffic.
Construction site deaths: Workersmaintaining dump trucks
Of the 44 deaths of workers maintaining dump trucks
on construction sites, over half involved workers getting
caught in/between machinery. For example, 46% of these
deaths involved workers getting caught between the dump
truck frame and the collapsing dump box. One-fifth of the
maintenance workers were struck by the dump truck they
were servicing, usually when the dump truck operator
moved the truck, not realizing the maintenance worker
was present.
Construction site deaths: Other workers
Of the 26 deaths in the ‘‘Other worker’’ category,
two-thirds were workers on the dump truck engaged in
TABLE II. Occupations ofWorkers Killed in DumpTruck-Related Deaths in Construction, byWorkerActivity,1992^2007
Occupation DumptruckOperatora Worker onfoot Workermaintainingdumptruck Otherworkerb Total deaths (%)
Truckdrivers 252 15 21 7 295 (36)Construction laborers 13 154 11 25 203 (24)Supervisors andManagers/administrators 31 55 7 13 106 (13)Heavyequipmentoperatorsc 23 45 7 12 87 (10)Other tradesd 17 74 18 29 138 (17)Totalworkerskilled 336 343 64 86 829 (100)
Source:U.S.Department of Labor, Bureau of Labor Statistics CFOIResearch File.aIncludes deaths of 46 dump truckoperators on foot.bOther workers include 42 drivers ofother vehicles,19workers on dump trucks,12 passengers in dump trucks, and10 passengers in other vehicles.cIncludes 51operating engineers,17 paving surfacing and tamping equipment operators, and10 excavating and loadingmachine operators.dIncludes 22 mechanics and repairers, 14 highway maintenance workers, 12 roofers, 11carpenters, nine construction inspectors, six crossing guards (flaggers), and nine non-constructionworkers.
TABLE III. Age Distribution of DumpTruck-Related Deaths inConstruction,1992^2007
Agegroup No.ofdeaths (%)
<20 19 (2)20^34 219 (26)35^44 205 (25)45^54 203 (24)55^64 136(16)Over65 47 (6)Total 829a
Source:U.S.Department of Labor, Bureau of Labor Statistics CFOIResearch File.aDoes not add to100%due to rounding.
Dump Truck Deaths in Construction 453
activities such as loading or unloading, and one-third were
drivers of other vehicles struck by a dump truck. Just
under one-third of the workers on the dump truck fell and
were either killed by hitting the ground or were rolled
over by the dump truck.
Street and Highway Deaths
Table IV also includes the data on the causes of dump
truck-related deaths on streets and highways. One-third of
the total deaths occurred on streets and highways. High-
way collisions accounted for almost two-fifths of the street
and highway deaths. Highway overturns accounted for
one-fifth of deaths. One-eighth of the deaths involved
dump truck collisions with trains. Dump truck operators
accounted for three-quarters of the street and highway
deaths. Drivers or riders in other vehicles who were killed
in collisions with dump trucks accounted for one-seventh
of street and highway deaths.
TABLE IV. Causes of DumpTruck-Related Deaths in Construction, According toWorkerActivity,1992^2007
Causeofdeath Dump truckoperatora Worker onfoot Workermaintainingdumptruck Otherworkerb Total no. (%)
ConstructionsiteStruckbydumptruckc 17 248 9 10 284(59)Caught in/betweend 7 21 23 5 56(12)Struckbyother vehiclee 16 25 � � 43(9)Struckbyobjectf 7 13 � � 31(7)Overheadpower line contact 17 8 � � 28(6)Dumptruckgoverturn 19 � � � 19(4)Othercauses 13 � � 7 23(5)
Total constructionsitedeaths 96 318 44 26 484h
Street andhighwayHighwaycollisions 63 � � 46 109(39)Highwayoverturns 57 � � � 60(21)Struckstationaryobject 38 � � � 40(14)Train collisions 35 � � � 35(12)Highwaynon-collisions 17 � � � 18(6)Struckbydumptruck � 11 � � 15(5)Othercauses � � � � �
Total street andhighwaydeaths 214 12 � 55 281h
Other locationsi 26 13 20 5 64Total deaths 336 343 64 86 829
Source:U.S.Department of Labor, Bureau of Labor Statistics CFOIResearch File.�,Data do notmeet BLS publication criteria.aIncludes deaths of 48 dump truckoperators on foot.bOther workers include 42 drivers of other vehicles, 21workers on dump trucks,12 passengers in dump trucks, and10 passengers in other vehicles.cIncludes178 deaths involving dump trucks backing up, and18 deaths involvingworkers rolled over by dump trucks.dIncludes 33 deaths involvingworkers being caught between the dump truck frame and falling dump truckbed.eIncludes 24 deaths involving theworker being struck and then pinned against an object (in16 cases a dump truck).fIncludes17 deaths involving theworker being struckby part of the dump truck and seven deaths involving falling dump trucks.gIncludes nine deaths involving backingup over embankment or river bed.hDoes not add to100%due to rounding.iIncludes17 deaths involving caught in/between incidents,14 involving struckby dump trucks, 8 involving dump truckoverturns, and11involving being struckbyobjects.
FIGURE 1. Distribution of construction site and highway dump truck-related deaths
by year 1992^2007. [Color figure can be seen in the online version of this article, avail-
able at http://wileyonlinelibrary.com/journal/ajim]
454 McCann and Cheng
Overall, two-thirds of the 336 dump truck operator
deaths in construction occurred on streets and highways,
not on construction sites. Contributing factors in the street
and highway deaths of dump truck operators included fail-
ure to fasten seat belts and vehicle malfunctions, including
blown tires and brake failures.
Deaths in ‘‘Other’’ Locations
Eight percent of dump truck-related deaths occurred
in other locations, including parking lots and garages,
mines/sand pits/quarries and industrial yards. Two-fifths of
the deaths involved dump truck operators (one-third on
foot), almost one-third involved workers maintaining
dump trucks, and one-fifth involved workers on foot.
The main causes of deaths included workers caught
in/between (27%), and workers struck by dump trucks
(22%). Over half of the caught in/between deaths involved
maintenance workers trapped between the dump truck
frame and a collapsing dump box.
DISCUSSION AND RECOMMENDATIONS
Overall, most dump truck-related fatalities in con-
struction occurred on construction sites, not during trans-
portation to and from sites. Of the construction site
deaths, two-thirds of those killed were workers on foot
compared to one-fifth being dump truck operators (on foot
or in dump truck). However, twice as many dump truck
operators were killed on streets and highways compared to
construction sites.
Other trades besides truck drivers operated dump
trucks both on construction sites and streets and highways.
These included supervisors and managers/administrators,
heavy equipment operators and construction laborers. It is
not known if these dump truck operators had CDLs (Com-
mercial Driver Licenses) or if they had higher rates of
fatalities than truck drivers.
In this analysis, age was not a factor among dump
truck operators between construction site deaths and street
and highway deaths. Comparisons between worker activity
categories on construction sites by age are not valid be-
cause of the difference in occupations for the different
worker activity categories. Age category rates could not
be determined since the occupations of dump truck fatali-
ties do not reflect the overall occupation distribution in
construction. For example, truck drivers comprise about
one-third of dump truck fatalities but only make up 1.6%
of all construction workers (CPWR, 2002, p. 10).
Construction Site Activities
Being run over by dump trucks and other vehicles
and caught in/between incidents are key issues in over
three-quarters of dump truck-related construction site
deaths.
Operating dump trucks
There are three main activities related to deaths while
operating dump trucks on construction sites: (i) operators
run over by their own dump truck or other vehicles while
working on foot around the dump truck; (ii) dump truck
overturns while backing to an edge of an embankment or
river to dump a load; and (iii) overhead power line elec-
trocutions while raising the dump truck bed to dump a
load. NIOSH FACE Reports investigated examples of
these fatalities (available at http://www.cdc.gov/niosh/
face/). NIOSH investigations of mining dump sites found
similar problems [Turin et al., 2001].
In order to prevent dump truck operators from being
run over by their own truck while working on foot around
their dump truck, the operators should be required to set
the parking brakes and turn off the motor before leaving
the truck, as required by OSHA regulations [29 CFR
1926.600(a)(3)(ii)]. On a slope, they should also set wheel
chocks to ensure the truck does not move.
Backing to an edge of an embankment or river to
dump a load can be very hazardous due to problems with
visibility and the possibility of collapse of the ground
edge. One recommendation is to dump the load at least 50
feet short of the dumping area, and then use a bulldozer
moving forward to push the load into the dumping site.
This would require rules or policies to be established by
the General Contractor.
Overhead power line electrocutions can be prevented
by preliminary site surveys to ensure the areas where
dump truck beds are raised are clear of overhead electrical
hazards.
Workers on foot
Ruff has conducted extensive research for the mining
sector on proximity warning systems to alert dump truck
drivers to the presence of workers on foot in the blind
spots of dump trucks [Ruff, 2001, 2003, 2006; Ruff and
Holden, 2003]. This research included the use of radar,
radiofrequency identification (RFID), closed circuit televi-
sion monitors (CCTV), and GPS. His results show that
camera and sensor systems are more effective in warmer
weather and present difficulties in cold, snowy climates.
Radar systems installed in large off-road dump trucks
were effective in detecting people, small vehicles, and oth-
er equipment.
The problem in construction is similar to that in min-
ing. Until these mechanical devices are perfected, reliance
on spotters appears to be the best practice alternative.
However, it is important for the spotter to stay out of the
Dump Truck Deaths in Construction 455
path of the backing dump truck and always be in eye or
radio contact with the dump truck operator.
Audible backup alarms do not appear to be effective
on construction sites due to the large amounts of compet-
ing noise sources and false alarms [Ruff, 2003; Lancaster
et al., 2007]. For this reason, in 2004, a Washington State
regulation required spotters or a mechanical device (e.g.,
video camera that provides the driver with a full view of
the area behind the dump truck) in addition to audible
backup alarms [Washington State Department of Labor
and Industries, 2004]. OSHA should adopt a similar regu-
lation. In addition, workers’ compensation carriers and ve-
hicle insurers should develop guidelines for construction
dump truck operators to ensure the safety of workers on
foot in blind spots.
Spotters, flaggers, and other workers on foot should
receive hazard awareness training to ensure a level of
knowledge or understanding in working around dump
trucks and other vehicles, in accordance with OSHA’s gen-
eral training requirements (29 CFR 1926.21(b)(2). They
should also wear high-visibility traffic vests [29 CFR
1926.201(a)].
Workers maintaining dump trucks
A noteworthy finding of this study is that over half of
the deaths of workers maintaining dump trucks involved
being caught between the dump truck frame and a collaps-
ing dump box. This is a result of failure to block or lock
out the raised dump truck body to prevent it from falling.
OSHA requires that heavy machinery, equipment or their
parts which are suspended or held aloft shall be substan-
tially blocked to prevent falling or shifting before employ-
ees are allowed to work under or between them [29 CFR
1926.600(a)(3)(i)].
Elevated dump truck beds should have permanently at-
tached supports with keyed lockout mechanisms for mainte-
nance and inspection activities. This feature is required by
OSHA [29 CFR 1926.600(a)(3)(i), 1926.601(b)(10)]. How-
ever, limited research has shown that one such lockout
mechanism, a dump truck bed brace bracket, has been
shown to be effective in an OSHA Safety and Health Infor-
mation Bulletin [OSHA, 2006]. Further engineering research
is needed to evaluate the effectiveness of existing blocking
or locking mechanisms for raised dump truck bodies on the
wide variety of dump trucks currently marketed and used in
the United States.
Streets and Highways
This study found that fastening of seat belts is the key
issue in street and highway dump truck-related deaths.
Over half of dump truck operators who died on streets
and highways were driving their trucks at the time of their
deaths. CFOI narratives showed that over one-quarter of
the dump truck operators who died in street and highway
accidents did not fasten their seat belt. The extent of the
problem is shown in a 2002 Federal Motor Carrier Safety
Administration (FMCSA) study of commercial vehicles
travelling on the highway [Knoblauch et al., 2003], which
showed that only one-quarter of single trailer dump truck
operators fastened their seat belts (more importantly,
three-quarters did not). Studies of automobiles and seat
belt reminders such as warning lights indicating the seat
belt is not fastened show that their presence reduced driver
fatality rates by 6% [Farmer and Wells, 2010].
Use of seat belt interlocking systems where the dump
truck would not operate without the seat belt being fastened
is another possible solution. One study focused on service
vehicle drivers used a device that prevents operators from
shifting gears for up to 8 s unless seat belts were fastened
[Van Houten et al., 2010]. Seat belt usage increased by 40%
for US drivers and 37% for Canadian drivers.
In addition, OSHA should develop regulatory language
that requires fastening of seat belts rather than just requiring
that vehicles have seat belts [29 CFR 1926.601(b)(9)]. Such
a regulation could be used by OSHA inspectors to enforce
fastening of seat belts or face penalties.
Reporting of information on seat belt usage in vehi-
cle-related deaths is required by BLS in fatality investiga-
tion reports. The FMCSA study described above suggests
that these data are often missing since three-quarters of
dump truck operators do not fasten their seat belts. How-
ever, CFOI narratives on dump truck operator deaths in
street and highway incidents indicate only one-quarter did
not fasten their seat belts. It is likely that that state reports
to CFOI are not adequately reporting seat belt usage. This
discrepancy between data sources suggests that states in-
volved in collecting data as part of the CFOI reporting
system should review and update their procedures to en-
sure improved collection of seat belt usage data in con-
struction vehicle fatalities.
According to BLS data for this same time period,
one-quarter of train/construction vehicle collision deaths
involved dump trucks. Federal Motor Carrier Safety Ad-
ministration (FMCSA) regulations require commercial
motor vehicles to slow down at railroad grade crossings so
they can stop if necessary (49 CFR 392.11) [FMCSA,
1991]. A large percentage of dump truck operators clearly
violated this regulation. The large number of trips made
by dump trucks to and from dump sites and construction
sites, scheduling pressures relating to construction produc-
tivity requirements and other possible work organization
demands are probable contributing factors. Consequently,
further study is needed to examine the relationship
between organization of work and why dump trucks are
involved in such a high percentage of train-related vehicle
collisions in the construction industry.
456 McCann and Cheng
CONCLUSION
In summary, analysis of the causes and contributing
factors in dump truck-related deaths in construction leads
to the following six recommendations:
(1) Improve reporting of seat belt use in fatality incident
reports.
(2) Promulgate an OSHA regulation requiring use of
seat belts and enforcement of the regulation.
(3) Promulgate an OSHA regulation requiring the use of
backup alarms, spotters, or other methods to alert
dump truck operators to the presence of workers on
foot in the blind spots of their trucks.
(4) Develop new operating procedures which would pro-
hibit direct dumping at river beds and embankments.
(5) Use of cameras and radar at railroad crossings to
enforce existing regulations on stopping at railway
crossings.
(6) Enforce worker safety practices (e.g., lockout/tagout
procedures on elevated dump truck beds).
Many of these recommendations are also potentially
applicable to dump truck operation in other industries,
such as mining, general industry and agriculture and may
broaden the scope of prevention efforts to reduce these
incidents across industry sectors.
ACKNOWLEDGMENTS
This research was funded as part of a grant to
CPWR—The Center for Construction Research and Train-
ing from the National Institute for Occupational Safety
and Health, NIOSH (NIOSH Grant 1 U54OH008307).
The research is solely the responsibility of the authors and
does not necessarily represent the official views of
NIOSH. CPWR is the research, training and service arm
of the Building and Construction Trades Department,
AFL-CIO. I thank the Center for Occupational and Envi-
ronmental Health at Hunter College for their cooperation
in this study, Janie Gittleman, Associate Director of
CPWR, Sue Dong, Director of the Data Center at CPWR,
and Bill Wiehagen of the NIOSH Pittsburgh Research Lab
for reviewing and commenting on the article. I also thank
Christina Daw of the Data Center at CPWR for the statis-
tical analysis support.
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