This train was gliding along Tuesday night on the same tracks where there was a "near miss" involving a Metrolink train last week.
Safety regulators are investigating why a commuter train engineer ran a red signal as another passenger train approached on track east of downtown Los Angeles.
Richard Katz, a member of the Metrolink board, said Tuesday that no one was injured in last week's incident. He said the engineer declared an emergency after passing the signal and stopped before going through a switch and onto a section of track being used by another Metrolink train.
Katz said cameras in the cab recorded the moments prior to the incident, and investigators will review the tape to determine if any safety rules were violated.
A California Public Utilities Commission spokeswoman says the agency is investigating the ``near miss.''