FREE Iowa DMV Practice Test #20 Page 5 of 5
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.
31 . When passing on a multilane highway:
Before passing, you must make sure the passing lane is clear and give the proper turn signal to show you are going to change lanes.
32 . When you see this sign, you should:

Warning signs alert drivers to upcoming hazards and are usually yellow with black markings. This sign warns drivers about potential traffic merging into their lane from the right.
33 . Because there is often slow-moving traffic on county highways, you should:
By looking well ahead of your vehicle, you will be able to spot slow-moving vehicles early and will have time to change lanes or slow down safely upon approaching them. Always be ready to adjust your speed to the speed of traffic, within the legal speed limit.
34 . Alcohol is the single greatest common factor in fatal motor vehicle crashes.
Alcohol is the number one killer on American roadways. Alcohol affects a person’s vision and slows their reaction time, so it takes longer to act in an emergency. Alcohol affects a person’s driving even if they are below the level of illegal intoxication.
35 . A broken yellow centerline means that:
A broken yellow centerline means that a driver may cross the centerline to pass another vehicle on the left as long as there is no oncoming traffic. Drivers should never cross a solid yellow centerline in order to pass.
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