Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 149; Flight Crew Total 18000; Flight Crew Type 8800
Situational Awareness
Conflict Ground Conflict; Critical
Flight Crew Took Evasive Action
Human Factors; Aircraft
While taxiing into the gate X noticed a tug pulling a baggage cart stop after the stop sign/line on a roadway to the right of the airplane. I then noticed the vehicle backing up and it appeared to be close to the stop line; I looked forward and looked back to my right and noticed the vehicle proceeding what appeared to be underneath the scimitar and the wing walker still giving the all clear. I told the Captain to stop which he did; the vehicle cleared the wing/scimitar and continued; we then continued on to the gate safely.
Air carrier First Officer reported while taxiing to the gate at ORD; a ground service vehicle drove underneath the wing.