Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Conflict Ground Conflict; Critical
Flight Crew Took Evasive Action
Environment - Non Weather Related; Human Factors; Procedure
While turning south from Taxiway B onto the ramp I noticed a (Service Driver) type vehicle traveling west on the vehicle service road. He was traveling at a high rate of speed and I mentioned it to the First Officer. As we approached the vehicle service road the driver passed through the yield sign painted on the road and drove right in front of our aircraft. I stopped the aircraft and we watched him drive by; looking to the south; paying no attention to us. After he passed by; the First Officer called Ground and told the Controller what happened.
Captain reported stopping the aircraft after a service vehicle failed to yield to their aircraft on a zipper road.