Updated for 2026 testing — 530+ questions based on the official Iowa Driver's License Manual (Revised August 2025). Realistic exam simulator with instant scoring. No signup required.
25 random questions with a practice timer. Based on the official Iowa knowledge test format. Need 20/25 (80%) to pass.
Practice road signs exclusively — shapes, colors, and meanings. Perfect for targeting the sign section before your exam.
Test only the critical numbers — speed limits, distances, BAC limits, suspension periods. The most memorized facts on the real exam.
Fast 15-question session — perfect for a daily warm-up or quick review before bed.
Every question, random order, no timer. Best for deep study before your test date.
Key chapters from the official handbook — organized, summarized, and exam-focused. Read before your test!
Everything important from the Iowa Driver's License Manual handbook — organized for the exam
Memorize these numbers first. Iowa test questions are frequently built around specific distances, speeds, BAC levels, and time periods. These come up constantly.
Road signs are tested heavily. Know each sign's shape, color, and meaning. The real test often shows a sign description and asks what it means.
| Shape | Meaning | Example |
|---|---|---|
| Octagon (8-sided) | STOP — always and only | Stop sign |
| Triangle (pointing down) | YIELD — give right of way | Yield sign |
| Diamond | WARNING — hazard ahead | Curve, pedestrian, deer |
| Pentagon (5-sided) | SCHOOL ZONE | School crossing |
| Pennant (triangle right) | NO PASSING ZONE | No-passing pennant |
| Round (circle) | RAILROAD CROSSING advance warning | RR crossing sign |
| Rectangle (vertical) | REGULATORY — rules you must follow | Speed limit, turn restrictions |
| Rectangle (horizontal) | GUIDE or INFORMATION | Street name, mile marker |
| X-shaped crossbuck | RAILROAD CROSSING — treat like yield | Railroad crossbuck |
| Color | Category | What It Means |
|---|---|---|
| Red | Regulatory — STOP / PROHIBIT | Stop, yield, do not enter, wrong way, no-turn circles |
| Yellow | WARNING | General hazard warnings — curves, hills, intersections, animals |
| Orange | WORK ZONE / CONSTRUCTION | Construction ahead, road crew, fines may double |
| Green | GUIDE / DIRECTIONAL | Highway exits, distances, direction, mile markers |
| Blue | SERVICES | Gas, food, lodging, hospital, rest area |
| Brown | RECREATION / CULTURAL | Parks, campgrounds, historical sites, scenic areas |
| White | REGULATORY | Speed limits, lane rules, turn restrictions |
| Fluorescent Yellow-Green | WARNING — pedestrian / school / bike | School zones, crosswalks, bike lanes |
| Fluorescent Pink | INCIDENT MANAGEMENT | Crash clean-up, debris removal, temporary traffic control |
Right of way is the #1 failure topic on the Iowa DOT test. Master every scenario below — these questions will be on your exam.
| Signal | What You Must Do |
|---|---|
| Solid GREEN | Proceed — but yield to traffic already in intersection |
| Solid YELLOW | Prepare to stop if safe; proceed only if stopping would be dangerous |
| Solid RED | Stop completely; may turn right on red after stop and yield (unless posted) |
| GREEN ARROW | Protected turn — oncoming traffic must stop. You may turn in the arrow's direction, but still yield to vehicles and pedestrians already in the intersection. |
| YELLOW ARROW | Protected turn is ending — prepare to yield or stop |
| Flashing YELLOW ARROW | Unprotected turn — you MAY turn but MUST yield to oncoming and pedestrians |
| Flashing RED | Treat exactly like a STOP sign — stop, yield, proceed when safe |
| Flashing YELLOW | Caution — slow down and proceed carefully. Do not need to stop. |
| RED + GREEN ARROW | Stop for through traffic; turn in direction of arrow only |
| Signal NOT working | Treat as ALL-WAY STOP — all traffic stops |
OWI questions appear on virtually every Iowa DOT test. Know the BAC levels, implied consent law, and penalties. Iowa uses "OWI" (Operating While Intoxicated), not "DUI."
| Situation | Consequence |
|---|---|
| BAC of 0.08%+ (driver 21+) | OWI — minimum 180-day revocation of driving privileges even without criminal conviction |
| Test refusal | Automatic 1-year revocation + minimum $1,250 fine — more severe than failing the test |
| Refusing chemical test | 1-year loss of driving privileges — Implied Consent Law (handbook says "lose your driving privileges for at least one year") |
| First OWI | Minimum 180-day revocation of driving privileges even without criminal conviction. Test refusal adds 1-year revocation + minimum $1,250 fine. |
| BAC of 0.02%+ (under 21) | OWI — minimum 60-day revocation (180 days if BAC is 0.08% or more). No temporary restricted license for under-18. |
| Repeat OWI | Increasingly severe penalties — longer revocations and harsher criminal charges for each offense |
| OWI causing serious bodily injury | Serious felony charge |
| OWI causing death | Vehicular homicide — felony charge |
School bus rules are heavily tested — especially the divided highway exception. Many people fail this question. Learn the exact rule.
| Location | Minimum Clearance |
|---|---|
| Fire hydrant | 5 feet |
| Stop sign | 10 feet |
| Railroad crossing (nearest rail) | 50 feet |
| Driveway entrance (public or private) | Not in front of — always prohibited |
| Fire station entrance | 20 feet |
| Inside an intersection or on a crosswalk | Never — always illegal |
| Handicapped space (without placard) | Never park here |
| Crosswalk | Do not park on a crosswalk (prohibited — no set distance, just never on it) |
| No Stopping zone | Never stop here, for any reason |
| No Parking zone | No parking — may stop to load/unload |
The rule: always turn wheels so that if the car rolls, it rolls away from traffic or is caught by the curb.
| Situation | Turn Wheels | Why |
|---|---|---|
| Facing DOWNHILL, WITH curb | RIGHT (into curb) | Car rolls into curb and stops |
| Facing DOWNHILL, NO curb | RIGHT (away from road) | Car rolls away from traffic |
| Facing UPHILL, WITH curb | LEFT (away from curb) | Car rolls back, caught by curb |
| Facing UPHILL, NO curb | RIGHT (away from road) | Car rolls away from traffic |
GDL questions appear on many tests, especially for younger test-takers. Know the three phases, the restrictions in each, and the specific numbers.
| Equipment | Requirement |
|---|---|
| Headlights (on) | Sunset to sunrise; whenever visibility is 500 ft or less (fog, rain, snow). Rule of thumb: headlights on whenever wipers are on. |
| High beams (dim) | When you can see an oncoming vehicle or are following within a close distance — Iowa manual does not specify exact feet; use common sense and courtesy |
| Horn | Must be in working order and audible — Iowa manual does not specify a distance requirement |
| Turn signals | Signal at least 100 ft before turning (≤45 mph) or 300 ft (>45 mph) — this is the signaling rule, not an equipment distance |
| Tinted windows | Windshield and front side windows must allow at least 70% light through. Iowa has NO medical exemption for tint. |
| TVs / video screens visible to driver | Prohibited while vehicle is in motion (navigation is excepted) |
| Muffler | Must prevent excessive or unusual noise |
| Brakes | Required on all four wheels; must stop within a safe distance |
| Wipers | Must adequately clean the windshield when used |
| Tail lights / rear reflector | At least one red tail light visible from 500 feet |
| Tires | Must have adequate tread depth and be in safe condition |
| Hazard lights | For use when parked/stopped in an emergency — not while driving normally |
| Seat belts | Front seat: all ages required. Back seat: under 18 required. Primary enforcement — $50/adult, $100/under 18 |
A proven 4-phase approach that builds real understanding — not just memorization. Work through each phase at your own pace, and you'll walk into the DMV ready to pass on your first try.
| Your Score | Status | What to Do Next |
|---|---|---|
| Under 75% | Needs more work | Go back to Phase 3 — run Weak Spots mode on your wrong answers. Re-read the Study Guide for those topics. Then try the simulator again. |
| 75% – 89% | Almost there | Run Weak Spots on what you missed, then take the simulator again. You're close — one more round should get you there. |
| 90%+ | Ready! 🎉 | Run the simulator one more time to confirm. Score 90%+ twice → you are ready for the real test. |
Before you walk into the Iowa Department of Transportation office:
25 questions · need 20 correct (80%) · you can miss up to 5 and still pass
August 2025 edition · Published by DOT
Download Official Manual →Source: Iowa Department of Transportation · Free download
We've distilled the official manual into 12 focused study sections. Every number, rule, and fact verified against the handbook. Click any topic to start studying.
The Iowa Department of Transportation written knowledge test has 25 multiple-choice questions with a single combined score. You must answer at least 20 correctly (80%) to pass. The test is not timed.
OWI stands for Operating While Intoxicated. Iowa uses OWI instead of DUI. The legal BAC limit is 0.08% for drivers 21 and over, 0.02% for drivers under 21 (Zero Tolerance), and 0.04% for commercial drivers.
You can apply for an Iowa instruction permit at age 14 if you are enrolled in an approved driver education course — one of the earliest permit ages in the United States.
Yes, this practice test is completely free. Every question is verified against the Iowa Driver's License Manual (MM1170 08/19/2025) published by the Iowa Department of Transportation.
An Iowa intermediate license has a nighttime driving restriction from 12:30 a.m. to 5 a.m. (with limited exceptions for work, school, and religious activities) and passenger limits for the first six months.
No, Iowa requires the knowledge test to be taken in person at an Iowa DOT Driver's License Service Center. You can practice here as much as you want, but the real test must be taken at an Iowa DOT location.
Iowa uses a 25-question written test with no time limit, scored as a single combined result at 80% (20 correct out of 25). On the surface this looks similar to Missouri's format — but Iowa's test content is distinctly different. Iowa's driver's license manual (publication MM1170) places unusual emphasis on rural road scenarios, farm equipment right-of-way, gravel road stopping distances, and wildlife avoidance — topics that barely appear on tests in more urban states. If you studied with a practice site written for a general US audience, you may have missed these entire categories.
Every fact on this page is verified against the Iowa Driver's License Manual (MM1170, updated August 19, 2025), published by the Iowa Department of Transportation. Iowa uses OWI (Operating While Intoxicated), the same term as Michigan, Indiana, and Wisconsin — not DUI or DWI. BAC limits are 0.08% for drivers 21 and over, 0.02% under 21, and 0.04% for commercial drivers. Iowa follows the 3-to-4-second following distance rule depending on conditions. School zone speed is 25 mph.
Iowa's Graduated Driver License program starts earlier than most — you can get an instruction permit at age 14, earlier than almost any other state except Arkansas, South Dakota, and North Dakota. The permit must be held for at least 6 months (longer if you're under 16), and teens must complete 20 hours of supervised driving (2 at night) to progress to an intermediate license. These age-and-hours facts are tested specifically, and the wrong answers in those questions usually come from other states' GDL rules.
This Iowa practice test is built for residents studying at Iowa DOT driver's license service centers in Des Moines, Cedar Rapids, Davenport, Sioux City, Iowa City, Waterloo, Council Bluffs, Ames, Dubuque, Ankeny, and every smaller Iowa town with a testing location. Free, no signup, no paywall — just the real MM1170 manual, the real 25-question format, and the real OWI rules as they appear on the actual written exam.