GAO-NSIAD-99-82-B-282071
MILITARY SAFETY
Army M939 5-Ton Truck Accident History and Planned Modifications
APRIL 1999
GAO-NSIAD-99-82-B-282071 - Page 10 of 23
B-282071
Figure 5: Comparison of Rate of Class A M939 and M34/35 Truck Mishaps, 1991-98
1991
1992
1993
1994
1995
1996
1997
1998
0
0.05
0.1
0.15
0.2
0.25
Fiscal year
Class A mishaps per 1,000,000 miles
M939
M34/35
Note: For years 1992, 1994, 1997, and 1998, the M34/35 had no Class A mishaps.
Source: 1998 Army Safety Center Analysis.
Army Plans to Spend
$234 Million to
Improve M939 Safety
Performance
The Army has initiated a program to improve the M939’s safety
performance and, according to
TACOM
estimates, plans to spend around
$234 million for various modifications. Most of the modifications are the
direct result of corrective actions suggested in studies. These studies
focused on identifying root causes of M939 accidents based on
information contained in accident investigation reports. On the basis of
the studies’ findings, the Army concluded that the overall truck design was
sound but that some modifications were necessary to improve the truck’s
safety performance. Planned modifications include $120 million for
upgrading the trucks tires, altering brake proportioning specifications, and
adding anti-lock brake kits. Other modifications include $114 million to
install cabs equipped with rollover crush protection systems and improve
GAO/NSIAD-99-82 Military Safety
Page 9
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