The U.S. Postal Service announced it will begin working with its contracted trucking providers to phase out the use of certain non-domiciled commercial driver’s license holders who have not undergone vetting by the U.S. Postal Inspection Service.

The move aligns with recent federal transportation policy changes and a Department of Transportation interim final rule titled “Restoring Integrity to the Issuance of Non-Domiciled Commercial Drivers Licenses.” USPS officials said the action is intended to strengthen safety and accountability in the agency’s transportation network.

Under the updated requirements, contracted trucking providers will be expected to discontinue the use of non-domiciled CDL operators unless those drivers have been reviewed and approved through the Postal Inspection Service’s vetting process.

Amber McReynolds, chairwoman of the USPS Board of Governors, said the changes reflect the agency’s emphasis on safety for employees, customers, and the public.

USPS relies heavily on contracted trucking services, moving approximately 55,000 truckloads per day and nearly 2 billion miles annually to support mail and package delivery to more than 170 million addresses nationwide.

Postmaster General and Chief Executive Officer David Steiner said the additional requirements are intended to support long-term operational safety and reliability following the agency’s recent peak holiday shipping season.

USPS officials said the agency will continue monitoring industry and government safety data related to its contractors as part of broader efforts to reduce accidents involving both employee and contract drivers.

The U.S. Postal Service is an independent federal entity that operates without direct tax funding for its day-to-day operations, relying instead on revenue from postage and services. It is overseen by a bipartisan Board of Governors and is marking its 250th year of service in 2026.