585.34—Definitions.
        
        (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.