Abstract: Accumulated data is transferred from a plurality of vehicles to a data processing station by transmitting a first packet type request from each vehicle via an open radio channel in response to a predetermined operation. This operation may include the vehicle's ignition being turned off. The first packet type is detected at a receiving station if a transmitting vehicle is within the vicinity of the receiving station. The receiving station transmits an instruction for data in the form of a second packet type upon detecting a first packet type. Thereafter, a portion of the accumulated data is transmitted from a detected vehicle in response to instructions generated by the receiving station.

Abstract: A data monitoring apparatus comprises a GPS receiver (400), micro controller (403), a plurality of sensors and actuators (407), a memory (402), a radio transmitter (405) and a data communication antennae (406). The apparatus accumulates real-time data concerning position and time and other operational parameters of a geographically mobile object for example a vehicle for transmission to a monitoring station. Transmission channel utility may be improved through transmission of accumulated historical data to a separate monitoring station.

Abstract: The transferring of accumulated data from a plurality of vehicles to a data processing station involves transmitting a first packet type request from each vehicle via an open radio channel in response to a predetermined operation. The predeterminedn operation may include the vehicle's ignition being turned off. The first packet type is detected at a receiving station if a transmitting vehicle is within the vicinity of the receiving station. The receiving station transmits an instruction for data in the form of a second packet type upon detecting a first packet type. Thereafter, a portion of the accumulated data is transmitted from a detected vehicle in response to instructions generated by the receiving station.