A 46 year-old trucker was killed last week in Urbandale after his tractor-trailer slipped out of gear and began to roll away from the Des Moines Network Distribution Center. The driver attempted to jump back into the truck to stop it, but slipped out and was run over.
He was transported to Iowa Methodist Medical Center in serious condition but died the next day from his injuries. Officials at the postal center say protocol for parking rigs was changed a year and a half ago.
According to the Des Moines Register, there have been four incidents of runaway rigs since the protocol change. The accident is currently under investigation.