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UDDS stands for Urban Dynamometer Driving Schedule,[1] and refers to a United States Environmental Protection Agency mandated dynamometer test on fuel economy that represents city driving conditions which is used for light duty vehicle testing.[2]

It is also known as U.S. FTP-72 (Federal Test Procedure) cycle, LA-4 cycle, in Sweden as A10 or CVS (Constant Volume Sampler) cycle and in Australia as the ADR 27 (Australian Design Rules) cycle.[3]

Though it was originally created as a reference point for fossil fueled vehicles, it is also used to give estimates on how many miles an electric vehicle will travel on a single charge.[4]

See also[edit]


  1. ^ https://www.epa.gov/emission-standards-reference-guide/epa-urban-dynamometer-driving-schedule-udds
  2. ^ United States Environmental Protection Agency#Fuel economy
  3. ^ http://www.dieselnet.com/standards/cycles/ftp72.html
  4. ^ https://www.epa.gov/fuel-economy/fuel-economy-testing-and-data