49 CFR 525.4 - Definitions.
(1) The terms fuel,manufacture,manufacturer, and model year, are used as defined in section 501 of the Act.
(2) The terms average fuel economy, fuel economy, and model type are used as defined in 40 CFR 600.002-77.
(5) The term customs territory of the United States is used as defined in 19 U.S.C. 1202.
(1) The term base level and vehicle configuration are used as defined in 40 CFR 600.002-77.
(2) The term vehicle curb weight is used as defined in 40 CFR 85.002.
(3) The term interior volume index is used as defined in 40 CFR 600.315-77.
(4) The term frontal area is used as defined in 40 CFR 86.129-79.
(5) The term basic engine is used as defined in 40 CFR 600.002-77(a)(21).
(6) The term designated seating position is defined in 49 CFR 571.3.
(7) As used in this part, unless otherwise required by the context:
Administrator means the Administrator of the National Highway Traffic Safety Administration;
Affected model year means a model year for which an exemption and alternative average fuel economy standard are requested under this part;
Production mix means the number of passenger automobiles, and their percentage of the petitioner's annual total production of passenger automobiles, in each vehicle configuration which a petitioner plans to manufacture in a model year; and
Total drive ratio means the ratio of an automobile's engine rotational speed (in revolutions per minute) to the automobile's forward speed (in miles per hour).