Odometer

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Display of the odometer in a car, usually combined with a speedometer
Odometer of an ICE 3 train with well over 2.3 million kilometers

An odometer is an odometer and consists of a counter that adds up counting pulses generated by a rotating wheel on a vehicle and displays the distance covered in kilometers . Odometers are used in almost all motor vehicles , but also on bicycles .

Designs

The first odometers were simple mechanical counters that were driven directly by the wheel. Such devices were made by the Roman engineer Vitruvius between 27 and 23 BC. Constructed to determine the distance traveled by rental carts.

In the 20th century, mechanical counters were increasingly replaced by electromechanical and eventually electronic devices. The basic principle always remained the same.

Odometer in motor vehicles

Until some time ago the odometer was mostly a roller counter , today it is mostly a digital display that is integrated into the instrument cluster . In Germany , it is legally referred to as an odometer in Section 57 StVZO and must be installed in every motor vehicle. According to Section 57 (3) StVZO, the deviation of the odometer may be +/- 4%.

The odometers must be sealed so that they are protected from manipulation. Since the exact mileage is an essential criterion when buying or selling a car, it is necessary that the mileage display has at least six digits. Unlawful adjustments of the odometer result in a different value of the vehicle z. B. in the usual Eurotax list .

In addition, there is often a trip meter that can be individually reset to B. can be used for fuel consumption calculations or to keep a logbook .

Legal

Since August 18, 2005, manipulating the speedometer has been a criminal offense in Germany, which was included in Section 22b of the Road Traffic Act (StVG). Those who carry out the manipulation on behalf of the owner are also punished. This also makes advertising for such services inadmissible. After § 22a , the following § 22b StVG was inserted:

Section 22 b Misuse of odometers and speed limiters

(1) Anyone who is punished with imprisonment for up to one year or with a fine

  1. falsifies the measurement of an odometer installed in a motor vehicle in that it influences the result of the measurement by acting on the device or the measuring process,
  2. the intended function of a speed limiter that is installed in a motor vehicle, cancels or affects or affects the device
  3. prepares a criminal offense according to numbers 1 or 2 by creating computer programs, the purpose of which is the commission of such an offense, procuring them for himself or for another, selling them or leaving them to another.

(2) [...]

(3) [...]

An adjustment to a different mileage is allowed, provided that the speedometer to be adjusted is not the one installed in the factory in this vehicle, but replaces the original one as a new or used speedometer and is therefore set to the real mileage of the vehicle - as the Federal Constitutional Court on 9. May 2006.

Odometer on the bike

The first odometers on bicycles were purely mechanical and were driven, for example, by a small plate attached to a spoke. Modern odometers work electronically and have a magnetic sensor and, like a car, a digital display. They are part of a bike computer and are easy to assemble. Usually you can measure both the total mileage and the distance covered from a certain point in time. Because bicycles have different wheel diameters, the odometer must be individually adapted to the respective bicycle.

Hubodometer on a wheel of a semi-trailer

Odometer on the trailer

A hubodometer is an odometer that is mounted on a semi-trailer , trailer , wheel , wheel bearing or brake , for example , in order to measure the mileage independently of the tractor . Thanks to an eccentric weight, the revolutions can be transferred to a mechanical counter without a direct connection to the frame, where they can be read in kilometers.

See also

Web links

Commons : Odometer  - Collection of pictures, videos and audio files
Wiktionary: Odometer  - explanations of meanings, word origins, synonyms, translations

Individual evidence

  1. BVerfG , 2 BvR 1589/05 of May 9, 2006, paragraph no. (1 - 11), http://www.bverfg.de/entscheidungen/rk20060509_2bvr158905.html