In the surveillance video, the woman is seen walking down the stairs at the city's Embarcadero Station on April 12 as she tries to get on the Muni train while the doors close. It seems her hand is in the door when she closes. She can be seen talking to an employee standing on the platform a few feet away, but the train is moving and being pulled down from the platform and pulled under the train.
The woman was reportedly injured, but officials have not said how serious this is.
The video was first acquired by the San Francisco Examiner.
"The door closed at a gap of less than half an inch between the door and the door jam as she reached her hand in the door," said Paul Rose, spokesman for the San Francisco Municipal Transportation Agency, in an interview with San Francisco ABC station KGO.
SFMTA, which operates the train line, has recently purchased new Muni wagons, including the wreckage.
"These trains and doors are safe," said Rose. "They work as planned, have been certified by CPUC [California Public Utilities Commission] and tested six months before we put them into service."
The CPUC has announced, according to KGO, to examine the doors and the pen system.
"I heard screams behind me and did not know what was going on, but there was a commotion and I was really scared," eyewitness Will Hayworth told the KGO. "She tried to keep up with this move, and this new Muni car pulled her by the hand … People shouted," Stop! "And some people even pounded on the car and shouted," Stop, stop, someone is trapped. "
" She stopped, but was still being towed, "he continued not slower. Basically, it seemed like the operator had no idea what was going on. "
Matt Haney, the supervisor from San Francisco District 6, which also includes the Embarcadero region, said that this was not the first time he heard complaints about door problems ̵
"Clearly there must be different sensors on the doors, or there is a way the drivers can see it differently," Haney said some of the operators actually said that this is a problem and they were worried about it ,
ABC News contributed to this report.