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49 U.S.C. 31504: Identification of motor vehiclesText contains those laws in effect through Public Law 119-120 (October 7, 2026).
From Title 49-TRANSPORTATIONCHAPTER 315-MOTOR CARRIER SAFETY

§31504. Identification of motor vehicles

(a)  General Authority.⁠—The Secretary of Transportation may⁠—

(1)  issue and require the display of an identification plate on a motor vehicle used in transportation provided by a motor private carrier and a motor carrier of migrant workers subject to section 31502(c) of this title, except a motor contract carrier; and

(2)  require each of those motor private carriers and motor carriers of migrant workers to pay the reasonable cost of the plate.

(b)  Limitation.⁠—A motor private carrier or a motor carrier of migrant workers may use an identification plate only as authorized by the Secretary.

( Pub. L. 97–449 , Jan. 12, 1983 , 96 Stat. 2439 , § 3104; renumbered § 31504 and amended Pub. L. 103–272, § 1(c) , (e), July 5, 1994 , 108 Stat. 745 , 1030.)

Historical and Revision Notes

Revised

Section

Source (U.S. Code)

Source (Statutes at Large)

3104(a)

49:304(a)(3) (last sentence) (related to “Sec. 324”).

Feb. 4, 1887, ch. 104, 24 Stat. 379, § 204(a)(3) (last sentence) (related to “Sec. 224”); added Aug. 9, 1935, ch. 498, 49 Stat. 546.

 

49:304(a)(3a) (last sentence) (related to “Sec. 324”).

Feb. 4, 1887, ch. 104, 24 Stat. 379, § 204(a)(3a) (last sentence) (related to “Sec. 224”); added Aug. 3, 1956, ch. 905, § 2, 70 Stat. 958.

 

49:1655(e)(6)(D) (related to “Sec. 324”).

Oct. 15, 1966, Pub. L. 89–670, § 6(e)(6)(D) (related to “Sec. 224”), 80 Stat. 940.

3104(b)

49:304(a)(3) (last sentence) (related to “Sec. 324”).

 

49:304(a)(3a) (last sentence) (related to “Sec. 324”).

 

49:l655(e)(6)(D) (related to “Sec. 324”).

The section is included to reflect the text of former 49:324 (related to motor private carriers and motor carriers of migrant workers) which is incorporated in the revised title by cross-reference.

Editorial Notes

Amendments

1994⁠—Pub. L. 103–272 renumbered section 3104 of this title as this section and amended it generally, restating it without substantive change.