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Anyone who operates a motor vehicle on public streets and roads in Iowa is required to have a driver’s license or learner’s permit. Iowa requires that you pass a vision screening before you get a driver’s license or learner’s permit. The IA DMV written test covers the contents of the Iowa Driver's Manual including highway signs, road rules, and safe driving techniques. The Iowa DMV knowledge test consists of 35 questions, and you'll need at least 28 correct answers to pass (80%). Practice with this sample test to get ready for the official IA driver's license test.
1. What should drivers do in case of a brake failure?
Use your ABS System.
Shift to a lower gear.
Tie a white cloth on the left door handle.
Brake lightly.
2. The ‘One Way’ sign means that:
one way sign
drivers must travel only in the direction of the arrow.
there is only one road that turns left at the intersection.
only vehicles turning left may travel in the direction of the arrow.
All of the above.
3. This road sign means:
road construction
There is a detour ahead
The highway ahead is being repaired
Crossroad ahead
You must stop for flaggers
4. A flashing red light means:
Drive with caution.
The same as a STOP sign.
The light will soon change to steady red.
Go, but yield the right-of-way to other traffic at the intersection.
5. When changing lanes, remember that:
You only need to turn and look over your right shoulder for lane changes to the right or left.
Vehicles with two outside mirrors have no blind spots.
You should look over your left shoulder for a left lane change and your right shoulder for a right lane change.
6. Driving at night is more dangerous because:
your reaction time is slower.
you cannot see as far ahead.
the road is more slippery.
7. When driving at night, drivers should:
look directly into the oncoming headlights of approaching vehicles.
always use their high beams.
increase their following distance.
8. This road sign warns drivers that:
side road sign
left turns are not allowed at the intersection.
another road enters the highway from the direction shown.
the road will make a sharp turn to the right.
another traffic lane joins the one they are on.
9. Passing is prohibited:
when your line-of-sight is restricted or limited by a curve.
on hills where your vision is restricted.
at intersections.
All of the above.
10. When you make a left turn from a two-way road into a four-lane highway, you must:
turn left two way
go straight through the intersection, and then make the turn.
enter the right lane, to the left of the center line.
enter the left lane, to the right of the center line.
enter the right lane. When traffic permits, you can move out of the left lane.
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IA DMV Written Test Facts

Number of questions: 35
Correct answers to pass:28
Passing score:80%
Minimum age to apply: 14
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