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Pennsylvania Runaway Truck Accident Reveals Dangers
WASHINGTON, D.C. - The National Transportation Safety Board adopted a final report of a runaway truck accident in Pennsylvania that has shown the consequences of improper maintenance on automatic slack adjusters for air brake systems. The Board issued 11 safety recommendations aimed at improving training for drivers and mechanics who work with air brakes.
On April 11, 2003, in the Borough of Glen Rock, Pennsylvania, a dump truck was traveling southbound on a steep downgrade of Church Street, when the driver found that he was unable to stop the truck. The truck struck four passenger cars, one of which struck three children who were on the sidewalk. As a result of the collision, a driver and an 11-year-old child from one of the passenger cars were killed. The remaining vehicle occupants and the three pedestrians received serious to no injuries.
The NTSB determined that the probable cause of the accident was the lack of oversight by the truck's owner, Blossom Valley Farms, Inc., which resulted in an untrained driver improperly operating an overloaded, air brake-equipped vehicle with inadequately maintained brakes. Contributing to the accident was the misdiagnosis of the truck's underlying brake problems by mechanics involved with the truck's maintenance. Also contributing was a lack of readily available and accurate information about automatic slack adjusters and inadequate warnings about safety problems caused by manually adjusting them.
NTSB Acting Chairman Mark V. Rosenker said, "We believe that more than 500,000 vehicles equipped with air brakes may be operated by drivers who, like the Glen Rock driver, have no air brake training and therefore may not be able to operate their vehicles safely. This situation needs to change, and change quickly."
The 21-year-old driver had been working for Blossom Valley for less than two weeks and had never driven an air brake-equipped vehicle before joining the company. Also, he received no training on how to drive an air brake-equipped vehicle. This is important because air brakes on trucks operate differently from hydraulic brakes on passenger cars. In addition, the rear brakes on the accident truck were out of adjustment. |
