Utah Transit Authority officials suspect a mechanical failure caused an unoccupied light rail car to decouple from a TRAX train, leading to a collision that injured three people.
The wreckage remained on the track overnight and well into Wednesday morning as UTA crews worked to remove the car and the train that struck it, as well as complete inspection of the rails for any damage. Blue Line and Red Line trains experienced 15-minute delays as the commute began.
By 9 a.m. Wednesday, UTA spokesman Remi Barron said, the damaged cars had been removed and full service through the accident scene near 8100 S. State Street restored. By afternoon, all trains were back on schedule.