Rulebook › 49 CFR Part 390
PART 390—FEDERAL MOTOR CARRIER SAFETY REGULATIONS; GENERAL
Official text from the eCFR, current as of 2026-10-22.
Subpart A—General Applicability and Definitions
- § 390.1 Purpose.
- § 390.3 General applicability.
- § 390.3T General applicability.
- § 390.4 Delegations and redelegations of authority of FMCSA employees to perform assigned actions or duties.
- § 390.5 Definitions.
- § 390.5T Definitions.
- § 390.6 Coercion prohibited.
- § 390.7 Rules of construction.
- § 390.8 Separation of functions.
Subpart B—General Requirements and Information
- § 390.9 State and local laws, effect on.
- § 390.11 Motor carrier to require observance of driver regulations.
- § 390.13 Aiding or abetting violations.
- § 390.15 Assistance in investigations and special studies.
- § 390.16 [Reserved]
- § 390.17 Additional equipment and accessories.
- § 390.19 Motor carrier identification reports for certain Mexico-domiciled motor carriers.
- § 390.19T Motor carrier, hazardous material safety permit applicant/holder, and intermodal equipment provider identification reports.
- § 390.21 Marking of self-propelled CMVs and intermodal equipment.
- § 390.21T Marking of self-propelled CMVs and intermodal equipment.
- § 390.23 Automatic relief from regulations.
- § 390.25 Extension or Modification of relief from regulations—emergencies.
- § 390.27 Locations of motor carrier safety service centers.
- § 390.29 Location of records or documents.
- § 390.31 Copies of records and documents.
- § 390.32 Electronic documents and signatures.
- § 390.33 Commercial motor vehicles used for purposes other than defined.
- § 390.35 Certificates, reports, and records: Falsification, reproduction, or alteration.
- § 390.36 Harassment of drivers prohibited.
- § 390.37 Violation and penalty.
- § 390.38 Exemptions for pipeline welding trucks.
- § 390.39 Exemptions for “covered farm vehicles.”
Subpart C—Requirements and Information for Intermodal Equipment Providers and for Motor Carriers Operating Intermodal Equipment
- § 390.40 Intermodal equipment providers.
- § 390.40T Intermodal equipment providers.
- § 390.42 Drivers and motor carriers operating intermodal equipment.
- § 390.44 Correcting the safety record of a motor carrier or an intermodal equipment provider.
- § 390.46 Preemption of State and local laws and regulations on the inspection, repair, and maintenance of intermodal equipment.
Subpart D—National Registry of Certified Medical Examiners
- § 390.101 Scope.
- § 390.103 Eligibility requirements for medical examiner certification.
- § 390.105 Medical examiner training programs.
- § 390.107 Medical examiner certification testing.
- § 390.109 Issuance of the FMCSA medical examiner certification credential.
- § 390.111 Requirements for continued listing on the National Registry of Certified Medical Examiners.
- § 390.113 Reasons for removal from the National Registry of Certified Medical Examiners.
- § 390.115 Procedure for removal from the National Registry of Certified Medical Examiners.
- § 390.123 Medical examiner certification for qualified Department of Veterans Affairs examiners.
- § 390.125 Qualified VA examiner certification training.
- § 390.127 Qualified VA examiner certification testing.
- § 390.129 Issuance of the FMCSA medical examiner certification credential.
- § 390.131 Requirements for continued listing of a certified VA medical examiner on the National Registry of Certified Medical Examiners.
- § 390.133 Reasons for removal of a certified VA medical examiner from the National Registry of Certified Medical Examiners.
- § 390.135 Procedure for removal of a certified VA medical examiner from the National Registry of Certified Medical Examiners.
Subpart E—Unified Registration System
- § 390.200T USDOT Registration.
- § 390.201 USDOT Registration.
- § 390.203 PRISM State registration/biennial updates.
- § 390.205 Special requirements for registration.
- § 390.207 Other governing regulations.
- § 390.209 Pre-authorization safety audit.