driver. reporter: the bus had no passengers onboard. police say it was out of service and was on its way to supplement the f-line trolley service on market street which is also why the bus was turning left on hartford which is not a usual path for muni buses. back here live, you can see the accident has effected traffic. the 33 bus line stopped running along 18th street causing delays for some muni riders. we re expecting the coroner to reveal the identity of the woman once her family has been notified. live in san francisco tonight, monty francis, nbc bay area news. very tragic, monty. thanks so much. b.a.r.t. board of directors will hold a special meeting to figure out a cell phone blackout policy. the move stems from the transit agency s decision to cut its wireless service to passengers to avert a potential protest earlier this month. that decision has enraged people who say b.a.r.t. crossed the line. it also prompted retaliation by hackers who broke into b.a.r.t. s