SAN FRANCISCO (AP) - A San Francisco light rail train left a station without its driver, who got out to fix a door and may have forgotten to set the emergency brake.
The San Francisco Municipal Railway train entered a tunnel Wednesday between Castro and Forest Hill stations before a passenger noticed the driver was still outside and activated the emergency brake.
John Haley, director of transit for the agency, says passengers were never in danger because the train was under automatic control.
Operators are required to engage the brake before exiting the train, and officials are looking into whether the driver forgot.
Without the brake on, the train's automatic control system remotely activated when the doors closed, sending it to the next station.
The train is being checked for mechanical problems.