Association between Truck Crashes due to Mechanical Failure and Truck Age

Table 2

Mechanical problems and distributions.

Mechanical problem	Count	Percentage
Tires	293	43.1
Brake system	201	29.6
Power train or exhaust system	41	6.0
Combination of two or more problems	25	3.7
Head, signal, or other light	32	4.7
Truck coupling/trailer hitch/safety chains	20	2.9
Wheels	9	1.3
Suspension	7	1.0
Steering	9	1.3
Body, doors	5	0.7
Safety systems	4	0.6
Wipers/windows/windshield	2	0.3
Vehicle contributing factors-no details	32	4.7
Total	680	100.0