Free Iowa DOT Practice Permit Test - Practice Test 3 2026
This Practice Test 3 is modeled on the Department of Transportation (DOT) written knowledge exam, whose length the agency does not publish; to pass you need a pass mark the DOT does not publish (our practice tests use 80%). These 25 questions rotate through traffic laws, road signs, and right-of-way - the core topics the DOT tests most heavily. Every question includes an explanation, so you learn the rule behind each answer - not just whether you got it right.
In states that use colored curbs, what does a red curb generally mean?
What's on the Iowa Practice Test 3
The DOT does not publish how many questions are on the real Iowa knowledge test. Practice Test 3 is a 25-question set drawn from 51 questions, scored against a practice target of 80%.
Topics in this test's question pool
- Road signs 16
- Traffic laws 11
- Safe driving 8
- Alcohol & drugs 5
- Emergencies 4
- Right of way 3
- Parking 2
- Vehicle equipment 2
51 questions in the pool, 8 of them written specifically for Iowa. Each attempt shows 25 in a new order.
Sample questions from this test, with answers
Want to test yourself first? Take the test above before reading these. Every answer below is checked against the source shown.
1. Your vehicle is stuck on a railroad crossing in Iowa. After getting everyone out and away, what should you do next?
- A. Call your insurance company before anything else
- B. Wait in the car for a tow truck to arrive
- C. Call the number on the blue and white ENS sign (correct)
- D. Try to push the car off before calling anyone
Why: Each crossing has a blue and white Emergency Notification System (ENS) sign with a railroad phone number and a crossing ID. Call it and give the crossing ID; if there is no sign, call 911.
Source: official Iowa driver handbook, p.12 (PDF p.12), 2.10 Railroad Crossings - Get Out, Get Away
2. Compared with dry pavement, how much longer can stopping distances be on ice and snow?
- A. As much as 2 times longer
- B. As much as 4 times longer
- C. About the same as dry roads
- D. As much as 10 times longer (correct)
Why: The Iowa manual warns that stopping distances can be 10 times greater on ice and snow. Slow down early, brake only while going straight, and stay far behind the vehicle ahead.
Source: official Iowa driver handbook, p.61 (PDF p.61), 5.13 Ice and Snow
3. A driver ahead points their left arm down like this. What does it mean?
- A. They will turn left
- B. They will turn right
- C. They will slow down or stop (correct)
- D. They are parking on the left
Why: The left arm extended downward means the driver is slowing down or stopping, so get ready to slow down too.
Source: official Iowa driver handbook
4. You are driving at 60 mph on a highway. How many feet does your vehicle travel per second?
- A. 44 feet
- B. 66 feet
- C. 88 feet (correct)
- D. 100 feet
Why: At 60 mph, a vehicle travels about 88 feet per second (60 x 5,280 / 3,600 = 88). Understanding stopping distances is critical - at 60 mph you need approximately 300 feet to stop.
Source: official Iowa driver handbook
5. On an undivided two-lane road, a school bus stops with its red lights flashing and stop arm out. What must drivers do?
- A. Stop, then pass slowly if no children are seen
- B. Stop in both directions until the lights stop (correct)
- C. Slow down and pass on the left with caution
- D. Wait until children reach the curb, then pass
Why: On an undivided road, traffic in both directions must stop for a school bus showing flashing red lights and a stop arm, and stay stopped until the lights stop. Rules for the opposite side of a divided highway differ by state (New York requires you to stop even then), so check your handbook.
Source: official Iowa driver handbook
6. Brown signs are used to mark:
- A. Parks and historic sites (correct)
- B. Toll roads and express lanes
- C. Detours
- D. Hospitals and gas stations
Why: Brown signs point to recreational and cultural sites - parks, campgrounds, historical landmarks, and scenic areas.
More Iowa facts, the full requirements table and the printable PDF are on the Iowa permit practice test page.
Iowa DOT Test Info
- Questions on real test
- Not published by the DOT
- Passing score
- Not published
- Correct needed
- a pass mark the DOT does not publish (our practice tests use 80%)
- Minimum age
- 14 years old
- Testing agency
- Department of Transportation
More Iowa Tests
Study Tip
Don't just aim to pass this Iowa Practice Test 3 once - keep taking it until you score 80% or higher two or three times in a row. Read the explanation after every question, even the ones you get right, to lock in the rule before your DOT exam.