What is a "tachograph"?

1. AA device that the vehicle owner installs according to the importer's instructions, and that records the number of revolutions of the wheels.
2. BA device installed in the vehicle according to instructions given by the importer and that indicates the vehicle's speed for the purpose of fuel saving.
3. CA device in the vehicle in which a disc is installed that indicates time, distance, driving speed and the driver's working hours.
4. DA device installed in the vehicle, that records technical data of the vehicle while driving and enables mechanical faults to be located.

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