The Water Department driver was turning left onto eastbound Ocean Avenue from Miramar Avenue when he struck the victim, 63-year-old Xiu Fang Huang, who was attempting to cross Ocean Avenue, said Tyrone Jue, a spokesperson for the San Francisco Public Utilities Commission.
The San Francisco Police Department wasn't able to confirm details of the crash on Tuesday afternoon, but Khalil Judie, an eyewitness at the scene, reported that the traffic light on Miramar was yellow when the driver entered the intersection and began his turn.
Judie had just disembarked from the K-Ingleside streetcar when he witnessed Huang struck and run over by the truck driver. "I ran up to her right away, and she just lifted her head, looked up at us, and dropped it," he said.
More details of the crashes and photos after the break. Warning: some of the images are graphic.
"I just keep imagining if that were my grandma," said Judie.
The crash occurred at 1:38 p.m., and police were continuing to investigate at the scene later this afternoon. Jue said police took the driver away for further testing. His two passengers remained at the scene.
"They had completed a job on Junipero Serra and Holloway replacing a two-inch irrigation service line," Jue explained. "They came over here, took a short break, and then they were en route to the other part of the city, over on Pacific Avenue to do a new installation of a water service line."
One woman who happened upon the scene after the crash occurred said she wasn't surprised someone was killed on Ocean Avenue. "Most the cars that come through here, they want to bum rush you across the street," said Alice Smith, who walks along Ocean Avenue regularly. "If you're disabled, older, like I am, I can't move that fast, and they get right up on you, practically a foot away from you, to try and make you hurry up and go across."
The second crash occurred three minutes later when the driver of a 9-San Bruno bus hit a female pedestrian at San Bruno Avenue and Burrows Street. The Appeal reports  that the victim was in critical condition at San Francisco General Hospital this afternoon.
"Per normal procedure, the Muni Operator (hired in 2000) involved in the accident has been placed on non-driving status and will be tested for drugs and alcohol," said MTA spokesperson Judson True.
Both investigations were ongoing as of Tuesday afternoon.