2025 Iowa Permit Test 21
The following questions are from real DMV written tests. These are some of the actual permit questions you will face in Iowa. Each permit practice test question has three answer choices. Select one answer for each question and select "grade this section." You can find this button at the bottom of the drivers license quiz. For a complete list of questions and answers for Iowa please visit https://staging.dmvwrittentest.cheat-sheets.com/en/iowa/car.
Number of Tests
Number of Question
Passing Score
1. Your body gets rid of approximately:
Explanation
The average person’s body will process about one alcoholic drink in one hour. However, many factors play a part in determining how impaired a person will become when consuming alcohol, including the amount of alcohol consumed, how fast it is consumed, and a person’s body weight, food intake, and general health.
2. When changing lanes, you should never:
Explanation
Before changing lanes, check for drivers trying to pass you who may be trying to enter the same lane as you. Look over your shoulder to check your blind spot. You should never attempt to pass or otherwise change lanes in an intersection.
3. If you parallel park facing downward on a hill:
Explanation
When parking downhill, turn your front wheels toward the curb or edge of the road. When parking uphill on a road without a curb, turn your wheels toward the edge of the road. When parking uphill on a road with a curb, you must turn your front wheels away from the curb.
4. A leaky exhaust system in your vehicle is dangerous because it can cause:
Explanation
The exhaust system carries exhaust gas out of the vehicle and prevents fumes from entering into the passenger compartment. To prevent carbon monoxide poisoning, keep your exhaust system free of leaks. Replace all defective parts immediately.
5. This road sign means:
Explanation
This is a speed limit sign. It indicates the maximum legal speed that you may drive on the road where it is posted. At times of rain, snow, ice, or other less-than-ideal conditions, you may have to drive more slowly than the posted limit.
6. A single broken white line down the center of a two-lane road indicates:
Explanation
White lines are used to separate traffic moving in the same direction. Dashed lines indicate that drivers directly next to the line are permitted to pass when it is safe to do so.
7. You are driving along a street and hear a siren. You cannot immediately see the emergency vehicle. You should:
Explanation
If you hear a siren or an air horn close by but do not know exactly where the emergency vehicle is, safely pull over to the right side of the road and stop until you are sure it is not headed toward you.
8. If you park facing uphill on a street with a curb, set the parking brake and:
Explanation
When parking uphill on a road that has a curb, your wheels should be turned away from the curb. When parking uphill on a street without a curb or when parking downhill, your wheels should be turned toward the curb or edge of the road.
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