SAN FRANCISCO (AP) ? Authorities are investigating mechanical and human errors as possible causes of a collision between two San Francisco light-rail trains that has left several dozen people injured.
Municipal Railway spokesman Judson True said the transit agency will conduct a speedy investigation and get to the bottom of the crash so that such an accident does not happen again.
"We take this incredibly seriously," he added.
Officials said 48 people were taken to hospitals ? four with what appeared to be severe injuries ? when one train struck the end of another at the boarding platform of the West Portal Station on Saturday afternoon.
"This is probably one of the largest multiple-casualty incidents in recent years (in San Francisco)," said Pat Gardner, a deputy chief with the San Francisco Fire Department.