Narrative:

Cleared [to] taxi. Taxi light on and two vehicles ignored light that could have easily stopped forcing us to delay taxi. After they passed I observed another vehicle in the distance and began my left turn. Best way to describe it is like coming to a 4 way stop. You have right of way and begin to enter intersection and another vehicle which should have stopped and could have easily decides not too. This forces you to slam on brakes to avoid collision. I had to call flight attendant (flight attendant) to ensure everyone in back was ok.

Google
 

Original NASA ASRS Text

Title: B757 Captain reported performing an abrupt stop to avoid a collision with a ground vehicle during taxi at SFO.

Narrative: Cleared [to] taxi. Taxi light on and two vehicles ignored light that could have easily stopped forcing us to delay taxi. After they passed I observed another vehicle in the distance and began my left turn. Best way to describe it is like coming to a 4 way stop. You have right of way and begin to enter intersection and another vehicle which should have stopped and could have easily decides not too. This forces you to slam on brakes to avoid collision. I had to call FA (Flight Attendant) to ensure everyone in back was OK.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.