Anti-Lock

They were designed to let drivers avoid accidents...but a new study shows that fatality rates are actually higher for autos equipped with anti-lock brakes. For instance, the study, conducted by a insurance industry group, found that passengers were more likely to die in single-car crashes in cars with anti-lock brakes. As NPR's Don Gonyea reports, the experts say they're not yet sure what accounts for the loss in safety benefits.