544.4—Definitions.

(a) Statutory terms. All terms defined in 49 U.S.C. 33101 and 33112 are used in accordance with their statutory meanings unless otherwise defined in paragraph (b) of this section.
(ii) In the case of light trucks, any part listed in § 541.4(a) (1) through (14) of this chapter, or the cargo bed or transfer case;
(iii) In the case of heavy trucks, any part listed in § 541.5(a) (1) through (14) of this chapter, or the cargo bed, drive axle assembly, fifth wheel, sleeper, or the transfer case;
(iv) In the case of multipurpose passenger vehicles, any part listed in § 541.5(a) (1) through (14) of this chapter, or the cargo bed or transfer case; and
[52 FR 76, Jan. 2, 1987, as amended at 60 FR 33148, June 27, 1995; 61 FR 41987, Aug. 13, 1996; 62 FR 33756, June 23, 1997]