About DMV IQ
DMV IQ is a driving test prep platform built to help you pass your written knowledge test on the first attempt. We cover all 50 US states, three vehicle types, and every major topic on the real exam.
10,500+
Practice questions
50
US states covered
3
Vehicle types
100%
Questions with explanations
Every question is researched, not recycled
Every question in DMV IQ is written from official state driver handbooks, CDL manuals, and motorcycle operator guides. We don't scrape other practice test sites or generate questions from templates.
Each question includes the correct answer, a detailed explanation of why it's correct, why the other options are wrong, a hint to help you reason through it, and a reference to the source material. No shortcuts, no gaps.
Because driving laws differ from state to state — speed limits, DUI penalties, cell phone laws, insurance requirements — we maintain a separate question set for each state. A California question about passing on the right is not the same as a Texas question about passing on the right.
What every question includes
- ✓Correct answer— Clearly marked with explanation
- 💡Hint— A clue to help you reason through it
- 📖Detailed explanation— Why the answer is right and others are wrong
- 📋Source reference— Tied to official handbook section
- 🏷️Difficulty rating— Easy, medium, or hard
- 📂Category & tags— For targeted study by topic
Three vehicle types, one platform
Whether you're getting your first license, adding a motorcycle endorsement, or going for your CDL, we have you covered.
Car
~3,000 questionsStandard driver's license (Class D/E). Road signs, traffic laws, safe driving, state-specific regulations.
Topics: Road signs, right-of-way, speed limits, DUI laws, parking, highway driving
CDL
~4,700 questionsCommercial Driver's License (Class A/B/C). General knowledge, air brakes, HazMat, tanker, passenger, school bus.
Topics: General knowledge, air brakes, combination vehicles, HazMat, tanker, doubles/triples
Motorcycle
~2,800 questionsMotorcycle endorsement (Class M). Riding safety, hazard avoidance, protective gear, braking techniques.
Topics: Riding basics, hazard awareness, protective gear, braking, curves, group riding
Smarter study, not harder study
DMV IQ isn't a collection of random quizzes. The study system is built on three proven learning techniques:
- 1
Active Recall
You learn by answering questions, not re-reading. Testing yourself is proven to be more effective than passive study.
- 2
Spaced Repetition
Questions you get wrong come back at the right time — just before you'd forget them. Each review makes the memory stronger.
- 3
Smart Scoring
The IQ Readiness Score™ tracks 6 dimensions of readiness — not just right vs wrong, but difficulty, timing, coverage, and recovery.
How we ensure accuracy
Research
Each state's official driver handbook is reviewed for current 2026 laws, penalties, and procedures.
Write
Questions test understanding, not memorization. Wrong answers are plausible and educational.
Explain
Every question gets a detailed explanation, a hint, and a handbook reference. No placeholder content.
Update
Content is reviewed when laws change. Aggregate data flags questions that may be ambiguous or outdated.
Study anywhere
DMV IQ is available as a full-featured website and as a native mobile app for iOS and Android.
The website requires no download or account — open your browser, select your state, and start practicing. Free DMV practice tests, category study sessions, hints, and detailed explanations are all available at no cost.
The mobile app adds daily study features: push notification reminders, six challenge games, offline access, and a full progress dashboard tracking your IQ Readiness Score™ over time.
Web
- ✓No download needed
- ✓All 50 states
- ✓Free practice tests
- ✓Study by category
- ✓Instant explanations
Mobile App
- ✓iOS & Android
- ✓6 challenge games
- ✓Push reminders
- ✓Offline access
- ✓Full progress tracking
Ready to start?
Pick your state and take a free practice test. No account needed.
Take a Free Practice TestDisclaimer
DMV IQ is not affiliated with, endorsed by, or sponsored by any state DMV, DPS, BMV, or government agency. All content is for educational and practice purposes only. Our questions are based on official state driver handbooks but are not actual DMV test questions. Always refer to your state's official Driver Handbook for the most current information.