49 C.F.R. § 568.4
(a) The incomplete vehicle manufacturer shall furnish for each incomplete vehicle, at or before the time of delivery, an incomplete vehicle document (“IVD”) that contains the following statements, in the order shown, and all other information required by this part to be included therein:
(5) Gross axle weight rating (GAWR) for each axle of the completed vehicle for which the incomplete vehicle is intended, listed and identified in order from front to rear (e.g., front, first intermediate, second intermediate, rear). The ratings for any consecutive axles having identical gross axle weight ratings when equipped with tires having the same tire size designation may, at the option of the incomplete vehicle manufacturer, be stated as a single value, with the label indicating to which axles the ratings apply.
Examples of combined ratings:(a) All axles—2,400 kg (5,290 lb) with LT245/75R16(E) tires; (b) Front—5,215 kg (11,500 lb) with 295/75R22.5(G) tires.(c) First intermediate to rear—9,070 kg (20,000 lb) with 295/75R22.5(G) tires.
(7) Listing, by number, of each standard, in effect at the time of manufacture of the incomplete vehicle, that applies to any of the vehicle types listed in paragraph (a)(6) of this section, followed in each case by one of the following three types of statement, as applicable:
(i) Type 1—A statement that the vehicle when completed will conform to the standard if no alterations are made in identified components of the incomplete vehicle.
Example:104-This vehicle when completed will conform to FMVSS No. 104, Windshield Wiping and Washing Systems, if no alterations are made in the windshield wiper components.
(ii) Type 2—A statement of specific conditions of final manufacture under which the manufacturer specifies that the completed vehicle will conform to the standard.
Example:121—This vehicle when completed will conform to FMVSS No. 121, Air Brake Systems, if it does not exceed any of the gross axle weight ratings, if the center of gravity at GVWR is not higher than nine feet above the ground, and if no alterations are made in any brake system component.
[70 FR 7434, Feb. 14, 2005, as amended at 71 FR 28197, May 15, 2006]