It's a pretty busy Muni line. So when the crash happened, there were lots of people aboard. It all happened at 3rd Street and Evans Avenue just before 1 p.m. Saturday.
The view from SKY7 HD showed the train at rest on the tracks and a white van right next to it.
Investigators say the van was driving alongside the Muni train and hit it as the van's driver attempted to make a left turn in front of the train.
The driver of the van was transported to the hospital as a precaution.
About 19 people aboard the Muni train were taken to three area hospitals for minor injuries. People aboard described what happened.
"Yeah I was super scared," Raychelle Howard said. "I was really scared, I didn't know what it was, I just seen it come in so I had to hurry up and cover my baby."
"There's video on file on the Muni light rail vehicle as well as this particular intersection, it has a video monitor also," SFPD Sgt. William Murray said.
The crash affected the T-line for a couple hours. During that time, Muni used busses to shuttle passengers from downtown into this neighborhood. The train was hauled away a little before 4 p.m. Service to the T-line was restored about a half hour later.