BART riders faced up to 40-minute delays Tuesday morning after a train hit metal debris on the tracks causing a power outage between Balboa Park Station and Daly City.
The outage occurred at 8:51 a.m. and stranded about 500 passengers between the two stations for more than an hour, according to BART spokesman Jim Allison.
Service between the two stations was shut down and service to San Francisco Airport was temporarily suspended. All trains were turned around at the 24th Street station and sent back to the East Bay. BART eventually began to shuttle trains to the airport.
BART is still investigating how the debris got on the tracks, but, according to Allison, it appears to have fallen off an earlier train. He said about 27,500 passengers were riding 55 trains when the power outage occurred.
"We did not have any train service between those two stations till about 9:51 [a.m.]," Allison said. "We were able to turn the power back and we are able to use one of the two tracks."
Some passengers stranded on a train to Daly City got off the train through the emergency exits and walked on the tracks, with their luggage, to the station. It was similar to action passengers took in March when a fire stranded trains between Montgomery and Embarcadero stations.
"[It’s] the worst possible thing that people can do because that third rail is still live," Allison said. "It’s 1,000 volts."
BART service was back to normal by 11 a.m.