Narrative:

Pulling into [the] gate; I noticed a tug driving perpendicular on a collision course; not stopping. I told the captain to stop and the tug proceeded to cut us off; veering right towards the gate in front of our intended path. The tug driver had no intention of stopping for the aircraft; even after he finally noticed the aircraft.inform ramp crew of hazards associated with driving dangerously around the airport.

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Original NASA ASRS Text

Title: Air carrier First Officer reported telling the Captain to stop when a tug drove in front of them as they taxied into the gate at SFO.

Narrative: Pulling into [the] gate; I noticed a tug driving perpendicular on a collision course; not stopping. I told the Captain to stop and the tug proceeded to cut us off; veering right towards the gate in front of our intended path. The tug driver had no intention of stopping for the aircraft; even after he finally noticed the aircraft.Inform ramp crew of hazards associated with driving dangerously around the airport.

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.