Guide · the file that lives apart
When you hire a driver, §391.23 makes you investigate his last three years: safety performance history from previous DOT-regulated employers, and drug & alcohol history under §40.25. What comes back goes into a file the rules fence off from the driver qualification file — §391.53 — and carriers who staple it into the DQ folder have created a finding out of paperwork they actually did.
Three things. First, the history records are kept in a system "with controlled access" — limited to people in the company authorized to handle this kind of information. Second, the driver has enforceable rights over the file: to review it, to submit a rebuttal of anything he disputes, and to have errors corrected. Third, retention: the records are kept while he drives for you and for 3 years after — the same outer clock as the DQ file, in a different compartment.
The history file can contain another employer's account of an accident, a refusal, a positive test. The driver's rebuttal rights only mean something if the file is handled as its own thing — identified, access-limited, and correctable. Folding it into the general DQ folder breaks all three duties at once: access, identification, and the driver's ability to see and answer what is said about him.
It happens constantly: the carrier he drove for is gone, or its office never replies. The investigation duty does not evaporate — what changes is what the file must show. Send the inquiry in a way that leaves a record (the §391.23 inquiries go to each DOT-regulated employer from the last three years), keep copies of what you sent and when, note every follow-up attempt with its date, and file all of it. The file then proves the investigation happened even where the answer never came. What an auditor cannot accept is a file with nothing in it and a carrier saying "we asked" — the asking is the record. Previous employers, for their part, are required to respond to a proper inquiry within 30 days, and the driver's signed release in the same file is what authorizes them to answer.
The auditor checks that the investigations happened (the §391.23 inquiries and their replies, or your documented good-faith efforts when an old employer does not answer) and that the records sit in the separate file. An empty §391.53 file for a driver with three years of trucking behind him reads as an investigation that never happened — the era before he joined you is exactly what the new entrant audit cannot see any other way.
Nearly — but the inquiries still happened, and the file holds the record of them (including "no prior DOT-regulated employment" as the documented answer). Empty because the answer was nothing is different from empty because nobody asked.
No. Documents a driver gives you — a certificate he photographs, a copy of his license — belong to the DQ file or the Part 382 records they support. The §391.53 compartment holds what employers said — never let a general pile of driver papers write into it.
The page lays out three compartments per driver — DQ file, history file, drug & alcohol records — and the history compartment is flagged separate on the page and in the audit packet, so the structure enforces what the rule requires. See how it works.