Tachograph meaning

tăkə-grăf
A machine that records the measurements of a tachometer, especially one in a vehicle recording its speed and the times at which it was driven.
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A device that records the distance and time traveled by a vehicle (especially a truck or coach), used to check the drivers' working time.
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Origin of tachograph

  • Greek takhos speed –graph

    From American Heritage Dictionary of the English Language, 5th Edition