The technology that could have stopped the New Jersey train crash

A train that smashed into the station in Hoboken, New Jersey during rush hour on Thursday likely wasn't equipped with a technology called positive train control that could have prevented the derailment.  Positive train control is a speed-limiting technology that is built to "automatically stop a train before certain types of accidents occur," according to the website of the Association of American Railroads. Those accidents include train collisions and derailments. SEE ALSO: Social media do