tachograph
Low-frequencyTechnical/Regulatory/Professional
Definition
Meaning
A device fitted in a vehicle that records speed and distance traveled over time.
A combined speedometer, odometer, and clock that produces a record on paper or digitally of a vehicle's journey, often used legally to monitor drivers' working hours and rest periods.
Linguistics
Semantic Notes
Refers specifically to a recording device used in commercial transport; not used for simple speedometers.
Dialectal Variation
British vs American Usage
Differences
Both UK and US use the term identically. Spelling remains 'tachograph' in both. The device is regulated under different legal frameworks (e.g., EU/UK AETR rules vs. US FMCSA HOS rules).
Connotations
Primarily associated with trucking, lorry, and commercial vehicle compliance and law enforcement.
Frequency
Slightly more common in UK/European contexts due to long-standing EU regulations.
Vocabulary
Collocations
Grammar
Valency Patterns
The [vehicle] is fitted with a tachograph.The [driver/company] must comply with tachograph regulations.The [authority] checked the tachograph records.Vocabulary
Synonyms
Strong
Neutral
Weak
Usage
Context Usage
Business
Essential for logistics companies to ensure compliance with drivers' hours regulations.
Academic
Studied in transport law, logistics, and road safety research.
Everyday
Rarely used outside of professional driving contexts; a truck driver might say 'I need to get my tacho calibrated'.
Technical
A device meeting specifications of EC 3821/85 or similar regulations, comprising a sender unit, a recording unit, and a motion sensor.
Examples
By Part of Speech
verb
British English
- The vehicle was tachographed.
- All new lorries must be tachographed.
American English
- The truck was tachographed.
- All new trucks must be tachographed.
adjective
British English
- The tachograph analysis revealed breaches.
- He faced a tachograph offence.
American English
- The tachograph data proved the violation.
- He received a tachograph violation.
Examples
By CEFR Level
- This truck has a tachograph.
- The police officer checked the tachograph in the lorry.
- Drivers must ensure their tachograph is functioning correctly to comply with hours regulations.
- Forensic analysis of the digital tachograph data incontrovertibly placed the vehicle at the scene at the time of the incident.
Learning
Memory Aids
Mnemonic
Think 'TACHO' like 'tachometer' (speed) + 'GRAPH' (recording) = a device that GRAPHs your speed.
Conceptual Metaphor
A 'black box' for a truck; an 'unblinking eye' monitoring driver activity.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'тахометр' (tachometer), which only shows speed. A tachograph RECORDS it.
- The direct translation 'тахограф' is correct and used in technical Russian.
Common Mistakes
- Pronouncing it as 'tack-o-graph' (correct is with a 'k' sound).
- Using it to refer to any car's speedometer.
- Misspelling as 'tachograph'.
Practice
Quiz
What is the primary purpose of a tachograph?
FAQ
Frequently Asked Questions
No. A speedometer only shows current speed. A tachograph records speed, distance, and driving time over a period.
Primarily drivers of commercial goods vehicles and passenger-carrying vehicles (like buses and coaches) above certain weight or seating capacity, as defined by transport regulations.
A modern tachograph that records data on a smart card and internal memory, replacing older 'analogue' models that used waxed paper discs.
Tampering with a tachograph is illegal. Digital tachographs have security features to prevent tampering, and doing so can result in severe penalties for drivers and operators.