Iowa DOT permit warm-up test
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age14 years
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1. How does Iowa word the duty that limits speed no matter what the posted limit says?
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Answer B: A driver must not exceed a speed that permits stopping within the assured clear distance ahead
Iowa Code section 321.285 requires a careful and prudent speed and forbids driving faster than will permit the driver to stop within the assured clear distance ahead.
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2. The signal ahead turns yellow while you are approaching it. What does the yellow light mean?
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Answer C: The red is coming; stop if you can do so safely
A steady yellow warns that the red is next. Stop if you can do so safely; enter the intersection only when stopping would be dangerous.
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3. A yellow sign shows a truck on a slope with the legend 7 PERCENT GRADE. What should a driver of a heavy vehicle do?
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Answer A: Select a lower gear before starting down
The percentage shows how steep the descent is, and choosing a low gear at the top lets the engine hold the vehicle back instead of the brakes overheating.
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4. About how far does a vehicle travel in one second at 60 mph?
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Answer A: About 88 feet
At 60 mph you cover about 88 feet every second, which is why a glance of only two or three seconds means driving the length of several vehicles blind.
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5. At roughly what speed can hydroplaning begin when a lot of water is lying on the road?
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Answer C: At speeds as low as about 35 mph
With enough water and less than perfect tread, a tire can start to ride on the water at around 35 mph, well below normal highway speeds.
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6. Why would a restriction like this one be applied to a stretch of road?
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Answer A: Because there is not enough visible road ahead to complete a pass safely
Limits on overtaking are set where a hill, a curve or an obstruction leaves too little sight distance for a driver to pull out, pass and return before meeting oncoming traffic.
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7. Where is the best place in the car for a child safety seat?
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Answer A: In the rear seat, secured either with the belt or with the lower anchors
The rear seat is furthest from most impacts and from the front airbags, and the seat must be locked in with the belt or the anchors.
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8. How long does the Iowa DOT revoke a license after a plea or verdict of guilty to a third operating while intoxicated offense?
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Answer D: Six years
Iowa Code section 321J.4 requires the department to revoke the license for six years upon a plea or verdict of guilty of a third or subsequent violation of section 321J.2.
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9. What is the correct first step when parallel parking behind an empty space?
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Answer D: Signal, pull up alongside the vehicle in front of the space, then back slowly into it
Parallel parking is done in reverse from a position alongside the vehicle ahead of the space, because backing in lets the rear wheels guide the vehicle to the curb.
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10. Why is a wet road at night harder to read than the same road in daylight?
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Answer A: The wet surface reflects light away and swallows the lane markings
A film of water sends your headlight beam onward instead of back to you, so lines, edges and people in dark clothing almost disappear.