How much can it cost to equip all vehicles authorized for airport operation to have a GPS navigation system. May not be perfect, but certainly good enough to avoid such blunders. And cheap compared to potential consequences, including an aborted takeoff.
LAX like most major US airports has ASDE-X surface detection equipment. The system tracks aircraft and vehicle movement on runways and taxiways using a variety of sensors.
ASDE-X has safety logic to alert the controller of possible future collisions.
(Pictured:
SAAB Sensis ASDE-X Terminal)