View source for Physics:Curb weight

'''Curb  weight''' (American English) or '''kerb weight''' (British English) is the total [[Physics:Mass|mass]] of a vehicle with standard equipment and all necessary operating consumables such as [[Physics:Motor oil|motor oil]], transmission oil, [[Physics:Coolant|coolant]], [[Physics:Air conditioning|air conditioning]] refrigerant, and sometimes a full tank of fuel, while not loaded with either passengers or [[Engineering:Cargo|cargo]]. The [[Engineering:Gross vehicle weight rating|gross vehicle weight]] in that it further includes the maximum payload of passengers and cargo.<ref>{{cite web|title=Curb Weight vs Gross Vehicle Weight - CarsDirect|url=https://www.carsdirect.com/car-safety/curb-weight-vs-gross-vehicle-weight}}</ref> 
This definition may differ from definitions used by [[Social:Government|government]]al regulatory agencies or other organizations. For example, many [[Social:European Union|European Union]] manufacturers include the weight of a {{convert|75|kg|lb|adj=on}} driver and luggage to follow European Directive 95/48/EC.<ref>{{cite web | url=http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:31995L0048:EN:HTML | title= EU Commission Directive 95/48/EC | publisher = European Commission | accessdate=2009-01-04 }}</ref> Organizations may also define curb weight with fixed levels of fuel and other variables to equalize the value for the comparison of different vehicles. 

The United States Environmental Protection Agency regulations define curb weight as follows:  Curb weight means the actual or the manufacturer’s estimated weight of the vehicle in operational status with all standard equipment, and weight of fuel at nominal tank capacity, and the weight of optional equipment computed  in accordance with §86.1832–01; incomplete light-duty trucks shall have the curb weight specified by the manufacturer.<ref>{{Cite web|url=https://www.law.cornell.edu/cfr/text/40/86.1803-01|title=40 CFR § 86.1803-01 - Definitions.|website=LII / Legal Information Institute|language=en|access-date=2020-04-20}}</ref>

'''Unladen mass''' depends on the manufacturer and can be the same as curb weight, however, it is often the total mass of the car without a driver, fluid or any additional equipment.

== See also ==
* [[Engineering:Dry weight|Dry weight]]
* [[Engineering:Gross vehicle weight rating|Gross vehicle weight rating]]
* [[Physics:Tare weight|Tare weight]]
* Standard displacement

==References==
{{reflist}}

[[Category:Automotive technologies]]
[[Category:Mass]]



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