On Wednesday, November 7, 1990, about 4:11 a.m. Pacific standard time, two Atchison, Topeka and Santa Fe Railway Company (ATSF) freight trains collided head on at milepost (MP) 25.6 in Corona, California. The westbound ATSF freight train 818, which was traveling from Barstow, California, to Hobart yard, City of Commerce, California, was on the Corona siding. It passed the stop signal, and the lead locomotive reentered the main track area, blocking all movement on the main track. The eastbound ATSF freight train 891, which was traveling from Hobart yard to Chicago, Illinois, was on the main track and collided with train 818. Each train had three-person crews.
As a result of the collision, the entire crew of ATSF 818 was killed and four locomotives and three rail cars were derailed. The engineer and conductor of train 891 sustained serious injuries and the brakeman was killed, all three locomotives and five rail cars were derailed. The total damage was estimated to be $4,400,000.