The “Unified Carrier Registration Agreement” (updated February 2020) outlines the regulations and administrative procedures related to the Unified Carrier Registration (UCR) system. This agreement governs the collection and distribution of registration information and UCR fees from motor carriers, brokers, freight forwarders, and leasing companies involved in interstate commerce. Key elements include definitions of entities involved, applicability of the UCR to interstate and intrastate operations, and provisions for state participation. The document also details how carriers must designate a base state for registration, compliance procedures, and the administration of fees. Enforcement guidelines and audit requirements for verifying compliance are specified, alongside rules for dispute resolution and adjustments to UCR fees. States participating in the UCR agreement are required to maintain proper record-keeping and can audit entities to ensure accurate fee payments.