Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Event / Encounter Other / Unknown
Flight Crew Took Evasive Action
Human Factors
While taxiing Aircraft X after landing; we were directed by ramp control from taxiway bravo northbound to abeam 66 blue line to gate.  Well after starting our turn east to the blue 66 square; a truck drove in front of us southbound on the service road not yielding.  The Captain had to apply brakes to avoid a collision.  Nothing else to add. Ensure ramp personnel comply with traffic procedures.
Air carrier First Officer reported a ramp vehicle on the service road crossing the taxiway did not yield to their aircraft.