Principal place of business

Principal place of business means the single location designated by the motor carrier, normally its headquarters, for purposes of identification under this subchapter. The motor carrier must make records required by parts 382, 387, 390, 391, 395, 396, and 397 of this subchapter available for inspection at this location within 48 hours (Saturdays, Sundays, and Federal holidays excluded) after a request has been made by a special agent or authorized representative of the Federal Motor Carrier Safety Administration.

Source

49 CFR § 390.5

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Scoping language

Unless specifically defined elsewhere, in this subchapter:

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