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National Highway Traffic Safety Administration (NHTSA, pronounced "NITZ-ah") is an agency of the Department of Transportation within the U.S. federal government. The organization's mission is to "Save lives, prevent injuries, and reduce vehicle-related accidents."

  • The NHTSA is also responsible for administering the Corporate  Average Fuel Economy, wherein they aim to incentivize the manufacturing of production of fuel-efficient vehicles by obtain fuel economic requirements against the sales-weighted harmonic averages of each vehicle maker's variants of vehicle models.
  • Many governments outside the North America are regulating fuel economy by heavily taxing motor fuel and/or including a vehicle engine service of its fuel economy in the computation of vehicle registration taxes