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Iowa driver's examination

(From the 2019 Iowa driver handbook)
Number of tests: 24
Number of questions: 35
Passing score: 28
Directions: To get an Iowa’s license, you will have to take the vision screening and a knowledge test if you have an invalid or expired (over one year) out-of-state license, or if you have not had a driver’s license before. If you have a valid out-of-state license that allows you to drive by yourself, the driving test may be waived.

The Iowa knowledge test shows how well you understand road signs, traffic laws, and safe-driving practices. Everything you must know to pass the knowledge test is in Iowa Driver’s Manual guide. The Knowledge tests include 35 multiple choice questions

If you answer at least 28 questions correctly. you will be well prepared to take the knowledge test for your learner's permit.
You have made error so far
Passing grade —
7 or fewer errors
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1.
This sign means:
new york hospital emergency services to the right road sign
Highway changes ahead and to the right.
Hiking trails ahead and to the right.
Hotel ahead and to the right.
Hospital ahead and to the right.
2.
As alcohol builds up in your blood, it:
Slows down your reactions.
Makes you feel less confident.
Begins to metabolize itself more quickly.
Decreases the number of driving errors.
3.
To avoid panic stops:
Watch for hazards well ahead of you on the roadway.
Drive with your window partly down.
Accelerate heavily.
4.
When you are merging onto the freeway, you should be driving:
At or near the speed of traffic on the freeway.
Five to 10 mph slower than the speed of traffic on the freeway.
The posted speed limit for freeway traffic.
5.
A regulatory sign containing a red circle with a slash through the middle indicates:
That drivers should come to a complete stop.
That an action is forbidden.
That some drivers should yield to other drivers.
That drivers should drive under the speed limit.
6.
When driving in fog:
Use your parking lights.
Use your low beams.
Use your high beams.
It makes no difference which lights you use.
7.
When changing lanes, you should:
Rely on your mirrors.
Begin signaling as you move into the next lane.
Signal at least 500 feet before your lane change when driving on residential streets.
Always check your blind spot.
8.
When the road is marked with a solid yellow line and a broken yellow line, with the broken line next to your lane, you may pass:
Only in an emergency.
If you are on an expressway.
If traffic is clear.
Only at an intersection.
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