Crews are cleaning up after a train derailment in South St. Louis.
Metro’s Chief Operating Officer for Transit Services, Ray Friem, said there are sensors within the tracks throughout St. Louis that actually tell the train how fast it can be going.
Two cars on overpass when it collapsed.
Union Pacific says the train was carrying mainly auto parts from Texas.
Union Pacific officials are trying to determine the cause of the derailment.
Nine empty cars derailed around 9 Sp.m. Monday near Interstate 44