Ariz. Rev. Stat. § 28-5231 – Records requirements; inspection

A. For the purpose of enforcement of this chapter, a manufacturer, shipper and motor carrier shall maintain and keep within this state books, records and other data as required by the department. The manufacturer, shipper or motor carrier shall not destroy the books, records and other data for a period of three years.
B. During usual business hours or at any time if the cause is to protect the public safety, the manufacturer, shipper or motor carrier shall allow employees of the department of public safety or the department of transportation to inspect the books, records or other data.
C. To verify the truth and accuracy of a statement, report or return and to determine compliance with safety rules imposed under this chapter, an officer of the department of public safety or any peace officer, during usual business hours or at any time if the cause is to protect the public safety, may examine:
1. 1. Records, books or other data required to be kept by a manufacturer, shipper or motor carrier under this chapter.
2. 2. Equipment and facilities pertinent to the operation.
3. 3. Other books of account, records and data kept by the manufacturer, shipper or motor carrier in any other business in which the manufacturer, shipper or motor carrier also engages.