The crash was reported at 10:23 a.m. at the intersection of Third and 23rd streets, Muni spokesman Paul Rose said.
The collision caused minor injuries to six people on board, San Francisco Fire Department spokeswoman Lt. Mindy Talmadge said.
The victims were taken to a hospital and are expected to survive, she said.
The Muni light-rail vehicle was on the KT-Ingleside/Third Street line.
Rose said the truck hit the Muni car on its right side, toward the front of the vehicle.
“We’re working with the Police Department to determine exactly what happened,” he said.
An employee at the nearby Ameritech Computer Service, Inc., located at 2688 Third St., said a truck with a flatbed trailer T-boned the Muni vehicle.
He said he didn’t hear the crash happen, but came outside afterward and saw several people being put into ambulances on stretchers.
Bus shuttles took passengers around the area while crews worked to clear the scene.
The crash was cleared at 11:25 a.m. and normal Muni service resumed.
DanMcMenamin/SashaLekach, Bay City News
12:00 PM: Six people were injured when a San Francisco Municipal Railway light-rail vehicle was hit by a big-rig in San Francisco’s Dogpatch neighborhood this morning, a fire department spokeswoman said.
The crash was reported at about 10:30 a.m. near the intersection of Third and 23rd streets, fire Lt. Mindy Talmadge said.
The big-rig reportedly crashed into the Muni vehicle, causing minor injuries to six people on board. The victims were taken to a hospital and are expected to survive, Talmadge said.
The Muni light-rail vehicle was on the KT-Ingleside/Third Street line. Bus shuttles took passengers on the line around the area while crews worked to clear the scene of the crash, Muni officials said.
Fire crews left the scene by 11:20 a.m., Talmadge said.
Dan McMenamin, Bay City News