How dangerous trucking companies escape their past and get back on the road
As truck traffic increases, government and industry haven't been able to stop thousands of so-called "chameleon carriers," with deadly consequences.
Watch CBS News
As truck traffic increases, government and industry haven't been able to stop thousands of so-called "chameleon carriers," with deadly consequences.
Hazardous materials incidents on U.S. highways have risen sharply in recent years. CBS News investigative correspondent Stephen Stock reports.
The accident occurred early Friday morning, officials say.