What is Part 366?
The FMCSA rulebook for BOC-3 process-agent designation and legal-service support for authority.
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Part 366 is the FMCSA process-agent rulebook. It explains how motor carriers, brokers, and freight forwarders designate agents for service of process using Form BOC-3. In practical terms, BOC-3 tells courts, agencies, and legal parties who can receive legal papers on behalf of the transportation company in required States.
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The FMCSA rulebook for BOC-3 process-agent designation and legal-service support for authority.
Applies to motor carriers, brokers, freight forwarders, successors, and new authority applicants.
BOC-3 names process agents and supports authority registration, legal service, and compliance records.
Process agents must have proper State presence and be able to receive legal service correctly.
BOC-3 should cover every required State for the company’s authority and actual operating scope.
Blanket designation gives broad process-agent coverage through one provider for required States.
BOC-3 is a core authority-support filing separate from insurance, bond, and application fees.
BOC-3 changes require a new filing, entity review, and retained proof of current designation.
Common mistakes include wrong entity, missing copy, insurance confusion, P.O. boxes, and canceled service.
A practical checklist for entity match, filing route, required States, retained copy, and provider status.
Missing or incorrect BOC-3 can delay authority, complicate reinstatement, and create legal-service risk.
DispatchHQ helps carriers organize BOC-3, insurance filings, broker bond records, authority applications, reinstatement paperwork, UCR, DOT updates, process-agent records, and compliance calendars so authority paperwork does not slow down operations.
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