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Quality Assurance Protocols Flashcards

7 cards from real BAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quality Assurance Protocols flashcards as text
  1. Which entity is responsible for developing and maintaining the Quality Assurance Plan for EBTs used in DOT testing?

    Answer: The EBT manufacturer

    Under 49 CFR Part 40, EBT manufacturers are responsible for developing and submitting a QAP that covers maintenance and calibration of their specific device.

  2. What is the correct response if an EBT produces two consecutive screening readings that differ by more than 0.020 g/210L?

    Answer: Void both tests and remove the device from service

    Two screening results differing by more than 0.020 g/210L indicate instrument malfunction; both tests must be voided and the device removed from service.

  3. An Alcohol Reference Solution must be used within what timeframe after its manufacture date to remain valid for QA checks?

    Answer: One year from date of manufacture or by the expiration date, whichever is earlier

    An ARS must not be used past its expiration date or more than one year from manufacture, whichever limit is reached first.

  4. Which of the following items is NOT required to appear on an EBT printout generated during a DOT test?

    Answer: Subject's Social Security Number

    DOT printouts must include device serial number, test number, date/time, and result — the subject's SSN is not required on the printout.

  5. If a BAT must use a backup non-evidential screening device (e.g., a breathalyzer not on the EBT CPL), what must happen before a result above 0.020 g/210L is reported?

    Answer: A confirmation test must be conducted on a DOT-approved EBT

    Any non-negative screening result must be confirmed using a DOT-approved EBT from the NHTSA Conforming Products List before action can be taken.

  6. What does 'sequential test number' on an EBT printout allow investigators to do?

    Answer: Verify the order of tests to detect any skipped or altered records

    A sequential test number creates a chronological, auditable record that allows investigators to confirm no tests were skipped, repeated, or altered.

  7. Under what circumstance may a BAT perform a confirmation test on a different EBT than the one used for the screening test?

    Answer: Only when the screening EBT is on the CPL and the confirmation EBT is also on the CPL

    Both the screening and confirmation EBTs must appear on the NHTSA CPL; there is no requirement that the same unit be used for both steps.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. transportation.gov — Test delivery, eligibility, retake policy, score validity · verified Oct 2026
  2. ecfr.gov — Exam format, passing score, renewal · verified Oct 2026