49 CFR § 383.93 - Endorsements.

---
identifier: "/us/cfr/t49/s383.93"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 383.93 - Endorsements."
title_number: 49
title_name: "Transportation"
section_number: "383.93"
section_name: "Endorsements."
chapter_name: "FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "B"
subchapter_name: "FEDERAL MOTOR CARRIER SAFETY REGULATIONS"
part_number: "383"
part_name: "COMMERCIAL DRIVER'S LICENSE STANDARDS; REQUIREMENTS AND PENALTIES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 521, 31136, 31301,  and 31502; secs. 214 and 215 of Pub. L. 106-159, 113 Stat. 1748, 1766, 1767; sec. 1012(b) of Pub. L. 107-56, 115 Stat. 272, 397, sec. 4140 of Pub. L. 109-59, 119 Stat. 1144, 1746; sec. 32934 of Pub. L. 112-141, 126 Stat. 405, 830; secs. 5401 and 7208, Pub. L. 114-94, 129 Stat. 1312, 1546, 1593 (49 U.S.C. 31305(d)), sec. 23019 of Pub. L. 117-58, 135 Stat. 429, 777; and 49 CFR 1.87."
regulatory_source: "52 FR 20587, June 1, 1987, unless otherwise noted."
cfr_part: "383"
---


# 383.93 Endorsements.

(a) *General.* (1) In addition to passing the knowledge and skills tests described in subpart G of this part, all persons who operate or expect to operate the type(s) of motor vehicles described in paragraph (b) of this section must pass specialized tests to obtain each endorsement. The State shall issue CDL endorsements only to drivers who successfully complete the tests.

(2) The only endorsements allowed on a CLP are the following:

(i) Passenger (P);

(ii) School bus (S); and

(iii) Tank vehicle (N).

(3) The State must use the codes listed in § 383.153 when placing endorsements on a CLP or CDL.

(b) *Endorsement descriptions.* An operator must obtain State-issued endorsements to his/her CDL to operate commercial motor vehicles which are:

(1) Double/triple trailers;

(2) Passenger vehicles;

(3) Tank vehicles;

(4) Used to transport hazardous materials as defined in § 383.5; or

(5) School buses.

(c) *Endorsement testing requirements.* The following tests are required for the endorsements contained in paragraph (b) of this section:

(1) *Double/Triple Trailers*—a knowledge test;

(2) *Passenger*—a knowledge and a skills test;

(3) *Tank vehicle*—a knowledge test;

(4) *Hazardous Materials*—a knowledge test; and

(5) *School bus*—a knowledge and a skills test.

[53 FR 27651, July 21, 1988, as amended at 67 FR 49760, July 31, 2002; 68 FR 23850, May 5, 2003; 76 FR 26887, May 9, 2011; 84 FR 52034, Oct. 1, 2019]