---
kind: "section"
citation: "49 C.F.R. § 541.4"
title: "49"
number: "541.4"
heading: "Definitions."
url: "https://uscodex.org/cfr/49/541.4"
---

# §541.4. Definitions.

- (a) **Statutory terms.** All terms defined in 49 U.S.C. chapter 331 are used in accordance with their statutory meanings unless otherwise defined in [paragraph (b)](#b) of this section.
- (b) **Other definitions.**
  - (1) **Interior surface—** means, with respect to a vehicle part, a surface that is not directly exposed to sun and precipitation.
  - (2) Light-duty truck (LDT) means a motor vehicle, with motive power, except a trailer, designed primarily for the transportation of property or special purpose equipment, that is rated at 6,000 pounds gross vehicle weight or less.
  - (3) Line means a name which a manufacturer applies to a group of motor vehicles of the same make which have the same body or chassis, or otherwise are similar in construction or design. A “line” may, for example, include 2-door, 4-door, station wagon, and hatchback vehicles of the same make.
  - (4) 1990/91 median theft rate means 3.5826 thefts per thousand vehicles produced.
  - (5) Multipurpose passenger vehicle (MPV) means a passenger motor vehicle which is constructed either on a truck chassis or with special features for occasional off-road operation and which is rated at 6,000 pounds gross vehicle weight or less.
  - (6) **Passenger car—** is used as defined in [§ 571.3](/cfr/49/571.3.md) of this chapter.
  - (7) VIN means the vehicle identification number required by [part 565](/cfr/49/part565.md) of this chapter.

## Notes

### Amendments

[59 FR 64168, Dec. 13, 1994, as amended at 61 FR 29033, June 7, 1996]

### Authority

Authority: 49 U.S.C. 33101, 33102, 33103, 33104, 33105 and 33106; delegation of authority at 49 CFR 1.95.

### Source

Source: 50 FR 43190, Oct. 24, 1985, unless otherwise noted.

### Amendments

[59 FR 64168, Dec. 13, 1994, as amended at 61 FR 29033, June 7, 1996]