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Definition of "tachograph" [tach•o•graph]

  • 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "tachograph" in a sentence
  • "The new rules forbid drivers of commercial vehicles, including rescue tow trucks, from travelling more than 62 miles from their bases unless the vehicle is fitted with a tachograph – a device that monitors the number of hours spent on the road."
  • "The jury heard expert evidence that the vehicle's tachograph showed Mr Shapland had been travelling at 55mph (89km/h) in a 40mph (64km/h) zone, and that braking had reduced the speed to 52mph (84km/h) at the point of impact."
  • "Those who admitted forging their tachograph records were: James Aird, 48, of Mountblow"
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