Iowa Permit Practice Test 6
25 questions written from the Iowa Driver's License Manual, with an explanation and page citation for every answer.
When does Iowa law require you to use both headlights?
Keyboard: press 1–4 or A–D to answer, Enter for the next question, S to save, R to read aloud, P to pause reading, L to listen and answer.
About this test
These questions were written from the Iowa Driver's License Manual (Form M M1170 07/23/2026). 13 of the 20 Iowa questions in this test cover rules that are specific to Iowa or differ between states. Every answer comes with an explanation and a link to the exact page it comes from, so you can check it yourself.
Your answers are saved in this browser. Questions you miss go to My mistakes so you can practice them again.
Sample questions from this test
When does Iowa law require you to use both headlights?
- A Only between midnight and 5 a.m.
- B From sunset to sunrise, or when visibility is 1,000 feet or less
- C From sunset to sunrise, or when visibility is 500 feet or less
- D Only when it is raining
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C. From sunset to sunrise, or when visibility is 500 feet or less
Iowa requires both headlights from sunset to sunrise and whenever you cannot see 500 feet ahead, as in fog, heavy rain or snow. A good rule of thumb: wipers on, headlights on.
In Iowa, at what blood alcohol concentration (BAC) is a driver age 21 or older Operating While Intoxicated (OWI)?
- A .08 or higher
- B .10 or higher
- C .05 or higher
- D .12 or higher
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A. .08 or higher
Iowa defines OWI as driving with a BAC of .08 or higher, or with any amount of a controlled substance in your system. BAC can be tested by breath, urine or blood.
What do yellow lines on the pavement separate?
- A Traffic moving in the same direction
- B Bike lanes from travel lanes
- C Traffic moving in opposite directions
- D Parking areas from the lanes of moving traffic
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C. Traffic moving in opposite directions
Yellow lines separate traffic moving in opposite directions, and white lines separate traffic moving the same way. If you have a yellow line on your left, oncoming traffic is on the other side.
How far behind an emergency vehicle using lights and sirens must you stay?
- A At least 100 feet
- B At least 200 feet
- C At least 1,000 feet
- D At least 500 feet
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D. At least 500 feet
Stay at least 500 feet behind any emergency vehicle using lights and sirens. It may stop or turn suddenly, and responders need room to work.
You plan to turn off a highway posted at 55 mph. How far before the turn must you signal?
- A At least 100 feet
- B At least 150 feet
- C At least 500 feet
- D At least 300 feet
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D. At least 300 feet
When the speed limit is faster than 45 mph, Iowa law requires you to signal at least 300 feet before you turn. Higher speeds mean drivers behind you cover more ground before they can react.