Do I need a DQ file for myself?

Yes. Owner-operators driving under their own authority are both the carrier and the driver, so you keep a file on yourself.

Where do drug test results go?

In a separate, confidential drug and alcohol file, not in the DQ file.

Employment applicationRequiredSigned and complete, with 3 years of employment history (10 for CDL drivers).
Motor vehicle record from each stateRequiredFrom every state the driver held a license in the past 3 years, within 30 days of hire.
Road test certificate or equivalentRequiredOr a copy of a valid CDL where allowed.
Medical examiner’s certificateRequiredFrom a certified medical examiner. For CDL drivers, the driving record from their state that shows medical status; since Oct. 12, 2026 a paper certificate isn't proof for CDL drivers outside Alaska, so pull a new record after each physical. For non-CDL drivers, a note that you verified the examiner in the National Registry.
Previous employer safety performance historyRequiredRequest from DOT employers of the past 3 years within 30 days of hire.
Clearinghouse pre-employment queryIf it appliesFull query for CDL drivers, with the driver’s consent.
English language proficiencyRequiredDrivers must read and speak English well enough to talk with the public, understand signs and answer officers. Since June 25, 2025, inspectors can place a driver who fails this out of service (CVSA). See the non-domiciled CDL and English rules guide.

Annual MVR reviewRequiredPull a new MVR from each licensing state and review it.
Annual review noteRequiredDocument that you reviewed the driving record and whether the driver meets requirements.
Annual Clearinghouse limited queryIf it appliesFor every CDL driver.
Current medical certificateRequiredReplace it before it expires; most are valid up to 24 months.