FREE Iowa DMV Practice Test #21
The DMV practise tests in Iowa have been updated for January 2025. It comprises questions based on the most important traffic signals and legislation for 2025 from the Iowa Driver Handbook. To study for the DMV driving permit test and driver's licence exam, use actual questions that are very similar (often identical!) to the DMV driving permit test and driver's licence exam.
Each question on the practise exam has a tip and explanation to help you recall the ideas. Questions about traffic rules, traffic signs, and driving statutes, as well as information from the Driver Handbook, will be included in the written portion of the official Iowa DMV test.
You must properly answer 28 of the 35 questions to receive a passing mark. To help you prepare for your Iowa instruction permit or driver's licence, take our DMV practise test.
The DMV exam is offered in a variety of languages.
Using any form of testing help will result in an automatic fail, and the DMV may take further action against your driver's licence, so avoid it.
1 . You are coming to an intersection with a flashing yellow light. You should:
A flashing yellow light means that you should proceed through the intersection slowly and with caution. Scan your eyes across traffic in both directions.
2 . This sign means:

Decrease your speed as you approach an intersection with a yield sign. Prepare to stop and yield the right-of-way to vehicles and pedestrians in the intersection or crossroad. You must come to a full stop at a yield sign if traffic conditions require it.
3 . When getting ready to change lanes, you should:
Before changing lanes, check your side and rearview mirrors for traffic approaching you from behind. Just before you begin moving into the other lane, quickly glance over your shoulder and check for any vehicles that may be in your blind spot.
4 . A broken yellow centerline indicates that:
A broken yellow centerline next to your side of the road indicates that traffic may cross the centerline to pass from your side of the road.
5 . If you are driving on the interstate and pass your exit, you should:
Don’t make a last-minute turn into an exit. If you pass your exit, you must go to the next one.
6 . A steady green traffic light at an intersection means:
A steady green traffic light indicates that the driver may continue through the intersection. The driver should yield to traffic or pedestrians already in the intersection and proceed when the intersection is clear.
7 . Water on the road can cause a vehicle to hydroplane. Your car may hydroplane at speeds as low as:
Hydroplaning occurs when there is standing water on a roadway. At speeds up to 35 mph, most tires will channel water away from the tire. As your speed increases past 35 mph, tires cannot channel the water as well and your tires may start to lose contact with the road and ride over the water like a set of water skis.
8 . What color are pavement markings that separate traffic lanes moving in opposite direction?
Yellow lines are used in the center of the road to separate lanes of traffic moving in opposite directions.
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