Bonus Section

DWI Bonus Exams

Texas DWI deep-dive: Implied Consent and the DIC-23/24/25, NHTSA SFST procedure (HGN, Walk-and-Turn, One-Leg-Stand) with validation-study accuracy figures, the three-phase detection process, statutory penalties (DWI 1st through 3rd, child passenger, IA, IM), drug categories and DRE basics, and the DWI case law (Mata, Gant, Frye, Maxwell, Romo, Fischer, Wright).

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Immediate feedback after each question with statute and elements.
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Definitions Browse the full DWI / SFST glossary.
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Review

What the DWI section covers

This DWI practice test draws on 82 questions. Every question carries the statute it comes from and an explanation of why the answer is right, so a missed question points straight at the law to review.

Question categories

Sample questions

If you refuse to give a specimen of breath or blood, your license, permit, or privilege to operate a motor vehicle will be suspended or denied for not less than how many days, whether or not you are subsequently prosecuted for the offense?

  1. 90 days
  2. 120 days
  3. 180 days (correct)
  4. 365 days

Why: Refusal of a breath/blood specimen results in a minimum 180-day administrative license suspension under Texas Implied Consent law. The suspension is independent of any criminal prosecution. The DIC-24 statutory warnings advise the driver of this consequence before requesting the specimen.

Tex. Transp. Code §724.035; DIC-24

What are the three phases of the standardized DWI detection process?

  1. Stop / Question / Test
  2. Vehicle in Motion / Personal Contact / Pre-Arrest Screening (correct)
  3. Arrival / Investigation / Arrest
  4. Lookout / Engagement / Resolution

Why: NHTSA's DWI Detection process has three phases: (1) Vehicle in Motion (observing operation, deciding whether to stop); (2) Personal Contact (face-to-face contact, deciding whether to have driver exit); (3) Pre-Arrest Screening (administering SFSTs, deciding whether there is PC to arrest).

NHTSA DWI Detection Manual

What process is used to extract and concentrate ethanol from a fermented beverage?

  1. Filtration
  2. Distillation (correct)
  3. Centrifugation
  4. Pasteurization

Why: Distillation involves boiling the fermented liquid at controlled temperatures to vaporize the ethanol (boiling point 78.4°C) while leaving water (boiling point 100°C) behind. The ethanol vapor is then condensed back to liquid. This produces spirits with 35-95%+ ABV (whiskey, vodka, rum, etc.). Texas DWI deals with both fermented and distilled beverages — the legal standard is BAC, not the source.

DWI / chemistry