Section 585.103 - Definitions(a) All terms defined in 49 U.S.C. 30102 are used in their statutory meaning.(b)Bus, gross vehicle weight rating or GVWR,multipurpose passenger vehicle,passenger car, and truck are used as defined in § 571.3 of this chapter.(c)Production year means the 12-month period between September 1 of one year and August 31 of the following year, inclusive.(d)Limited line manufacturer means a manufacturer that sells three or fewer carlines, as that term is defined in 49 CFR 583.4 , in the United States during a production year.