What driver fitness rules are on the District of Columbia permit test?

District of Columbia's driver fitness questions come from its own statutes and the DC Department of Motor Vehicles handbook. QuizLane covers 3 District of Columbia-specific driver fitness items, drawn from 2 distinct source sections, alongside 10 questions on rules that apply in every state.

How many driver fitness questions are on the District of Columbia permit test?

DC Department of Motor Vehicles does not publish a per-topic breakdown. The test as a whole has 30 questions and you need 24 correct (80%) to pass, so driver fitness is worth studying alongside every other topic rather than in isolation.

Are these official District of Columbia DMV driver fitness questions?

No. These are original study questions written against District of Columbia law and the official handbook, each carrying the section it came from. They are not endorsed by DC Department of Motor Vehicles and are not copies of the real exam.

Do I need an account to practice District of Columbia driver fitness questions?

No. Practice starts immediately as a guest. An account is optional and only saves your attempt history across devices.

In the District of Columbia, a person under 21 is intoxicated with:

Any measurable amount of alcohol in the blood, urine, or breath

For non-commercial drivers in D.C., intoxication includes an alcohol concentration at testing of:

0.08 grams or more per 100 milliliters of blood (or equivalent breath/urine measures in the statute)

0.10% breath only with no blood measure

Any measurable amount at any age

0.05 grams or more per 100 milliliters of blood

DCDriver fitness

District of Columbia driver fitness practice questions

3 questions below test District of Columbia’s own driver fitness law, each with the statute or DC Department of Motor Vehicles handbook section it came from, plus 10 more on driver fitness rules that apply in every state.

The District of Columbia permit knowledge test has 30 questions in total and needs 24 correct (80%) to pass.

Practice driver fitness All District of Columbia topics

District of Columbia law

3 questions on District of Columbia’s own driver fitness rules

These differ from the rules that hold nationally — they are the ones that catch out drivers who studied another state’s handbook.

1. In the District of Columbia, a person under 21 is intoxicated with:
- A0.05% BAC only
- B0.08% BAC or more only
- Any measurable amount of alcohol in the blood, urine, or breath
- D0.02% BAC only
Answer: Any measurable amount of alcohol in the blood, urine, or breath. D.C. Code §50-2206.01 defines intoxication for a person under 21 as any measurable amount of alcohol in the person’s blood, urine, or breath.
Source: D.C. Code — §50-2206.01
2. For non-commercial drivers in D.C., intoxication includes an alcohol concentration at testing of:
- A0.10% breath only with no blood measure
- BAny measurable amount at any age
- C0.05 grams or more per 100 milliliters of blood
- 0.08 grams or more per 100 milliliters of blood (or equivalent breath/urine measures in the statute)
Answer: 0.08 grams or more per 100 milliliters of blood (or equivalent breath/urine measures in the statute). D.C. Code §50-2206.01 defines intoxication for non-commercial operation to include an alcohol concentration at the time of testing of 0.08 grams or more per 100 milliliters of the person’s blood (with corresponding breath and urine measures in the statute).
Source: D.C. Code — §50-2206.01
3. According to DC DMV drunk-driving materials, the legal BAC limit for non-CDL holders in the District is:
- A0.05 percent
- 0.08 percent
- C0.10 percent
- D0.04 percent for all drivers
Answer: 0.08 percent. DC DMV’s drunk-driving brochure states the legal limit for Blood Alcohol Content (BAC) in the District of Columbia is .08 percent for non-CDL holders and .04 percent for CDL holders.
Source: DC Department of Motor Vehicles — Drunk and Drugged Driving Prevention brochure — Legal BAC limit

Sources for the District of Columbia items above

Applies everywhere

Driver fitness rules that hold in every state

A sample of the national driver fitness bank. All 10 are in the practice run, combined with the District of Columbia items above for 13 questions in total.

1. Prescription and over-the-counter medicines can affect driving by:
- Causing drowsiness, blurred vision, or slowed reactions
- BHaving no effect if legally prescribed
- COnly affecting drivers over 65
- DImproving concentration
Answer: Causing drowsiness, blurred vision, or slowed reactions. Legality does not mean safety. Check labels and pharmacist advice for warnings about operating machinery.
Source: Official state driver handbook — Driver fitness — medication
2. What is the only reliable remedy for driver fatigue?
- AOpening the windows
- BTurning up the radio
- CCoffee or an energy drink
- Sleep
Answer: Sleep. Caffeine, cold air, and music mask drowsiness briefly. Only real sleep restores alertness, so stop somewhere safe and rest.
Source: Official state driver handbook — Driver fitness — fatigue
3. How does alcohol affect driving ability?
- It can impair judgment, vision, coordination, and reaction time
- BIt affects only new drivers
- CCoffee immediately cancels its effects
- DIt improves reaction time
Answer: It can impair judgment, vision, coordination, and reaction time. Alcohol can impair several abilities needed for safe driving, and only time lowers the amount in the body.
Source: Official state driver handbook — Driver fitness — alcohol and drugs

Practice all 13 driver fitness questions

Other District of Columbia rules with their own questions

Safe driving6 District of Columbia questions

Driver fitness elsewhere

Driver fitness rules in other states

Driver fitness law is set state by state — compare how another state handles it.

AlabamaAL · 5 questions ArkansasAR · 3 questions DelawareDE · 2 questions FloridaFL · 4 questions GeorgiaGA · 4 questions KentuckyKY · 6 questions LouisianaLA · 2 questions MarylandMD · 3 questions

Confirm current District of Columbia rules

Statutes and handbooks change. DC Department of Motor Vehicles is authoritative for District of Columbia driver fitness rules and for the permit test itself.

Visit DC Department of Motor Vehicles

Common questions

About District of Columbia driver fitness rules and this practice set.