Empty weight

from Wikipedia, the free encyclopedia

The empty weight , also called empty weight , is the mass of a technical object determined according to specified standards . The curb weight is an important characteristic for the classification of motor vehicles and aircraft .

Planes and missiles

There are a number of possible definitions for the curb weight of an aircraft, see aircraft weight .

In the case of rockets , the curb weight is that after the fire has closed . It's roughly the takeoff weight minus fuel.

Security-political-military definition

The Organization for Security and Cooperation in Europe (OSCE) defines the term “curb weight” in the Treaty on Conventional Armed Forces in Europe (CFE Treaty) of November 1990 in Article II as follows:

"Curb weight means the weight of a vehicle excluding the weight of ammunition, fuel, oil and lubricants, detachable reactive armor, spare parts, tools and accessories, detachable snorkeling equipment, crew and their personal equipment."

Road traffic


DIN 70020

There are various standards for determining the curb weight of a vehicle . According to the DIN standard DIN 70020 Part 2, the curb weight of a road vehicle (e.g. a car) is made up of the weight of the vehicle when the tank is at least 90% full and, depending on the type of vehicle, the vehicle driver's weight of 80 kg; the standard edition of June 1972 applied to motor vehicles and their trailers with the exception of motorcycles and certain special vehicles. (The standard edition of February 1957, however, also contained provisions for motorcycles and scooters.) It was largely coordinated with the international ISO recommendation R 1176. This standard edition differentiates in detail

  • the "weight of the dry chassis",
  • the "weight of the operational chassis",
  • the "weight of the dry chassis with driver's cab",
  • the "weight of the operational chassis with driver's cab",
  • the "empty weight of the dry vehicle" and
  • the "empty weight of the operational vehicle".

Upon verification, a tolerance of ± 5% was considered permissible. This DIN standard was withdrawn in January 2006 in favor of the international standard ISO 1176, 2nd edition from July 15, 1990.

For street-legal vehicle was in Germany during the 2005 to output vehicle certificates and (in 14) vehicle letters after the vehicle registration regulation also entered the empty weight of the vehicle. In the registration certificate valid from 2005 (Part I), the term in field G is used as "mass of the vehicle in operation in kg empty mass". The curb weight includes the vehicle including a full fuel tank, driver's weight (75 kilograms), on-board tools, spare wheel, first-aid kit and warning triangle. For vehicles that were registered for the first time from July 2003, only 90 percent of the fuel tank capacity is taken into account for the fuel filling.

Note: Until May 1972, DIN 70020 contained - without subdivision into several standards - “General terms; Definition and explanation "for motor vehicle construction. The August 1954 edition still contains details on how to determine a tax weight, which were then relevant for the tax assessment of some types of motor vehicle. The first edition of this standard dates from August 1940.

European Union

Directive EC 92/21

In the Council Directive 92/21 / EEC of March 31, 1992 and after the adaptation by the Commission Directive 95/48 / EC of September 20, 1995 on the masses and dimensions of motor vehicles of category M1 (four-wheel vehicles with a maximum speed of more 25 km / h), the empty mass is defined as the mass of the vehicle in running order (including coolant, lubricant, fuel, spare wheel, tools and driver). A flat mass of 75 kg (68 kg + 7 kg luggage) is assumed for the driver.

Directive 2007/46

In Annex I, point 2.6. Directive 2007/46 on the creation of a framework for the type approval of motor vehicles defines the curb weight as the weight of the vehicle with its body in running order or the weight of the chassis, including liquids, tools, spare wheel (if available) and the driver. The mass of the driver is estimated at 75 kg; the fuel tank is 90% full and the other liquid-containing systems (except systems for used water) are 100% full of the capacity specified by the manufacturer.


The ordinance on the technical requirements for road vehicles defines curb weight as "the weight of the roadworthy, unloaded vehicle with coolant and lubricant, fuel (at least 90% of the fuel quantity specified by the manufacturer) and any additional equipment such as spare wheel, trailer coupling, tools, wheel chock , Fire extinguishers and the vehicle driver whose weight is assumed to be 75 kg ”( Art. 7 VTS ).

Individual evidence

  1. ^ Treaty on Conventional Armed Forces in Europe. (PDF) OSCE , November 19, 1990, accessed September 30, 2018 .
  2. polizei.rlp.de ( Memento from June 8, 2016 in the Internet Archive )
  3. Directive 92/21 / EEC
  4. Directive 95/48 / EC
  5. Directive 2007/46 / EC