Used to record the speed and duration of trips in a motor vehicle

• A tachometer that produces a graphical record of its readings

Wiktionary Word definitions in Wiktionary
n. A device that records the distance and time traveled by a vehicle (especially a truck or coach), used to check the drivers' working time.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Tachograph \Tach"o*graph\, n. [Gr. ta`chos speed + -graph.] A recording or registering tachometer; also, its autographic record.

Wikipedia Word definitions in Wikipedia
A tachograph is a device fitted to a vehicle that automatically records its speed and distance, together with the driver's activity selected from a choice of modes. The drive mode is activated automatically when the vehicle is in motion, and modern tachograph ...

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Cablink provides all the functions of a tachograph in a much easier to use form. ▪ Orwell Transport's case concerns the tachograph regulations which are frequently infringed, deliberately and unwittingly. ▪ Right: Traffic Manager ...

WordNet Word definitions in WordNet
n. a tachometer that produces a graphical record of its readings; used to record the speed and duration of trips in a motor vehicle