Phoenix semi-truck crash killing three is still a mystery

A semi-truck in Phoenix, Arizona kills three and critically injures a fourth occupant of a passenger car by running a red light according to an article by Emily Dean, appearing in the Arizona Republic on April 6, 2009.

Why did the driver of the semi-truck run the red light? Was it inattention or something more sinister, like fatigue as a result of not adhering to federal law requiring frequent driver rests when traveling interstate?

Unfortunately, driver fatigue is much too common when commercial pressures force interstate drivers to violate safety regulations.

Our prayers go out to the family of the victims of this tragedy and we can only hope that the owners and drivers of semi-trucks adhere to regulations designed to protect the public.