... time fleet management. New! GPS/GPRS/GSM vehicle dispatching and tracking device, use for real time fleet management.Smaller, ... Voice CommunicationThe driver can speak to control center and any other phone number with display and Mic&Speaker or Mic&Earphone. ** Taxi price ... door, shock, fuel, oil, breaks, handbrakes, RPM, engine and other frequent events, control center operator can sent out command ...