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Iowa driver's examination

(From the 2018 Iowa driver handbook)
Number of tests: 16
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:
Slippery when wet.
Stop sign ahead.
No U-turn.
2.
Alcohol causes:
Loss of concentration.
Poor coordination.
Slower judgment.
All of the above.
3.
If you are driving so slowly that traffic is backing up behind you, you should:
Decrease your speed.
Pull off the right side of the road and let traffic pass.
Not let the other cars pass your vehicle.
Use your four-way flashers.
4.
A bicyclist who doesn’t obey traffic laws:
Is in the right because bicyclists don’t have to obey traffic laws.
Can be ticketed.
Will always receive a warning from law enforcement.
Will have their bicycle impounded.
5.
The driver's left arm and hand are extended downward. This hand signal means that the driver plans to:
Turn left.
Turn right.
Stop.
Start up.
6.
This sign means you are approaching a railroad crossing that does not have a signal. You should:
Come to a complete stop.
Proceed at a consistent speed while looking and listening for approaching trains.
Slow down, look both ways, listen for any trains, and be prepared to stop if any trains are nearby.
7.
If a traffic signal light is green and a police officer signals for you to stop, you should:
Obey the officer.
Obey the traffic signal.
Do what the vehicle in front of you does.
8.
In inclement weather, you should:
Steer off the road.
Drive in a low gear.
Steer and brake smoothly.
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