B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 130; Flight Crew Total 12000; Flight Crew Type 5000
Situational Awareness; Fatigue; Other / Unknown
Conflict Ground Conflict; Critical; Ground Event / Encounter Vehicle
Flight Crew Took Evasive Action; General Maintenance Action
Human Factors
My aircraft was traveling east on BS around B44-B46 with aircraft pushed back on my left. During my taxi scan at some point I noticed a ramp vehicle between A concourse and B-concourse in the middle moving northbound.  At the time this was not unusual but my next scan showed the vehicle at a high rate of speed and not decelerating at my 2 o'clock position. I asked my LCA if the guy was slowing down and indeed he was not and it was obvious the vehicle was going to impact us. My LCA started screaming 'watch out watch out' at which point the vehicle was disappearing under our right wing at the same speed. I was already in an evasive turn 10-15 degrees left with more thrust to accelerate to hopefully gain enough separation but with my eyes on the tail of a CRJ-700 so as not to clip him with my left wing. I then turned back right to center line without feeling any impact. We called the FAs and asked if they felt any thing and they said no. At this time We proceeded [to have a] visual inspection by MX before departing. Visual inspection was OK and we departed. Subsequently the city and ramp found the film and the driver. Impact was avoided only due to the driver slamming on his brakes after he disappeared under our wing. An investigation is in progress. Point of note is that I was pretty hyped up and I had to call in to the duty manager that I can not sleep and need to be put on a Fatigue list as I would not be Fit for Duty in the early morning for the remainder of my trip.
B737 Captain experiences a near collision with a ground vehicle during taxi at DEN. A turn by the Captain and hard braking by the vehicle driver averted the collision.