Iowa: Road signs — Part 2 Practice Test
Questions in this part include: “What are warning signs meant to tell you to do?”
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Questions are original and based on the official manual "Iowa Driver’s License Manual" (July 2026), Iowa Department of Transportation.
All 17 questions in this practice test
Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.
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What kind of place does a Do Not Enter sign mark?
- Intersections where you must yield
- Places where passing is allowed
- Railroad crossings
- Roadway openings you are not to enter
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Correct answer: Roadway openings you are not to enter
Do Not Enter signs are at roadway openings you are not to enter.
Source: Iowa Driver’s License Manual (July 2026), page 8
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Where will you see Do Not Enter signs?
- At the beginning of every no passing zone
- At the start of each school zone
- At exit ramps
- At each railroad crossing
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Correct answer: At exit ramps
You will see Do Not Enter signs at exit ramps, in crossovers on divided roadways, and at numerous locations on one-way roads.
Source: Iowa Driver’s License Manual (July 2026), page 8
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What does a Wrong Way sign tell you?
- You are entering a divided highway and must keep to the right
- Traffic ahead is permitted to move in only one direction
- You made a wrong turn and have entered a lane of oncoming traffic
- The roadway opening ahead is one you are not allowed to enter
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Correct answer: You made a wrong turn and have entered a lane of oncoming traffic
A Wrong Way sign means you made a wrong turn and entered a lane of oncoming traffic.
Source: Iowa Driver’s License Manual (July 2026), page 8
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If you see a Wrong Way sign, what should you do?
- Stop in your lane and wait for the oncoming traffic to clear the road
- Speed up and leave the area as fast as you can to avoid a crash
- Keep driving and watch carefully for oncoming vehicles ahead of you
- Leave the traveled part of the road, stop, and turn around quickly and safely
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Correct answer: Leave the traveled part of the road, stop, and turn around quickly and safely
You should remove your vehicle from the traveled portion of the road and get stopped and turned around as quickly and safely as possible.
Source: Iowa Driver’s License Manual (July 2026), page 8
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What are warning signs meant to tell you to do?
- Come to a full stop before you continue driving
- Maintain your speed and watch for a regulatory sign
- Slow down and be prepared to stop if necessary
- Yield the right of way to all cross traffic
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Correct answer: Slow down and be prepared to stop if necessary
Warning signs tell you to slow down and be prepared to stop if necessary, because a special situation or hazard is ahead.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows a black plus-shaped cross. What does it tell you?
- Two lanes ahead will soon become one lane
- Another road ahead crosses the road you are on
- The road you are on ends at a T-shaped junction
- Traffic from a side road will merge into your lane
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Correct answer: Another road ahead crosses the road you are on
The intersection/crossroad sign means another road ahead crosses the road you are on, so you should watch carefully for cross traffic in your path.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows a traffic light. What should you be ready for when you see it?
- A railroad crossing with flashing lights
- A school zone with a crossing guard
- A freeway ramp with a stop sign
- An intersection and a stop light
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Correct answer: An intersection and a stop light
A signal ahead sign tells you to be ready for an intersection and a stop light.
Source: Iowa Driver’s License Manual (July 2026), page 9
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Signal ahead signs, which show a traffic light, are used on what kind of roads?
- Roads with lower speeds only
- Roads in school zones only
- Roads with higher speeds
- Roads that have a railroad crossing
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Correct answer: Roads with higher speeds
The manual says signal ahead signs are used on roads with higher speeds.
Source: Iowa Driver’s License Manual (July 2026), page 9
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You are on the main road and see a yellow diamond sign with a straight arrow and a second line joining it. What should you be prepared for?
- Other vehicles blending into your lane
- Oncoming vehicles crossing into your lane
- A hidden stop sign at the end of your road
- Pedestrians stepping onto the roadway
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Correct answer: Other vehicles blending into your lane
On the main road, a merging traffic sign tells you to be prepared for other vehicles blending into your lane.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows one arrow pointing up and one pointing down. Why should you keep to the right when you see it?
- You are approaching a narrow bridge with no shoulder
- A passing zone is about to begin on your left side
- Your road is about to change into a one-way road ahead
- You are leaving a one-way road and entering a two-way road
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Correct answer: You are leaving a one-way road and entering a two-way road
The two-way traffic sign means you are leaving a one-way road and entering a two-way road, so you keep to the right.
Source: Iowa Driver’s License Manual (July 2026), page 9
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What does the divided highway begins sign tell you?
- Two roads ahead will join into one wider road
- Two-way traffic will soon be divided by a center strip
- The road ahead becomes one-way for every vehicle
- Traffic ahead must stop for a railroad crossing
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Correct answer: Two-way traffic will soon be divided by a center strip
A divided highway begins sign means you are getting close to the place where two-way traffic will be divided by a center strip.
Source: Iowa Driver’s License Manual (July 2026), page 9
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What should you watch out for when you see the divided highway ends sign?
- Vehicles merging from a ramp on your right
- Oncoming vehicles, since traffic is no longer divided
- Pedestrians waiting on the center strip
- Cross traffic at a signal-controlled intersection
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Correct answer: Oncoming vehicles, since traffic is no longer divided
When a divided highway ends, two-way traffic is no longer divided by a center strip, so you should watch out for oncoming vehicles.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows a horse pulling a buggy. What does it warn you about?
- Horseback riders crossing at a trail
- A road that is closed to all motor vehicles
- Loose animals near a fenced pasture
- Slow-moving, horse-drawn vehicles on the roadways
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Correct answer: Slow-moving, horse-drawn vehicles on the roadways
The horse-drawn vehicle sign warns you to be alert for slow-moving, horse-drawn vehicles on the roadways.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows a tractor. What does the manual tell you to do when you see it?
- Reduce your speed and pass slowly
- Stop and wait until the equipment leaves the road
- Pass quickly before the equipment turns
- Follow closely to stay out of its way
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Correct answer: Reduce your speed and pass slowly
The farm machinery sign tells you to be alert for slow-moving farm equipment, reduce your speed and pass slowly.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows two lanes becoming one lane. What must traffic do when merging?
- Speed up to pass the other lane first
- Stop at the end of the lane
- Yield to other vehicles
- Flash its headlights to claim the space
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Correct answer: Yield to other vehicles
The lane ends sign says two lanes of traffic will soon become one, and traffic must yield when merging.
Source: Iowa Driver’s License Manual (July 2026), page 9
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What should you do when you see a deer crossing sign?
- Stop and wait for the deer to cross
- Slow down and watch carefully
- Speed up to clear the area quickly
- Sound your horn until you have passed
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Correct answer: Slow down and watch carefully
The deer crossing sign means deer may be trying to cross the roadway, so you should slow down and watch carefully.
Source: Iowa Driver’s License Manual (July 2026), page 9
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A yellow diamond sign shows a truck on a steep downward slope. What does the manual say you should do before going down the hill?
- Shift into neutral to save fuel
- Turn on your hazard lights
- Check your brakes
- Increase your speed to gain momentum
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Correct answer: Check your brakes
The hill sign warns all vehicles that the road ahead goes down a hill, and you should check your brakes before going down.
Source: Iowa Driver’s License Manual (July 2026), page 9