Iowa: Sign shapes and colors Practice Test
What the shape and background color of a traffic sign tell you before you can read it.
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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 21 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 do the shape and color of a traffic sign give you?
- The exact distance to the next town
- The number of lanes on the road ahead
- Clues to the type of information it provides
- The age of the sign
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Correct answer: Clues to the type of information it provides
The shape and color of traffic signs give clues to the type of information they provide.
Source: Iowa Driver’s License Manual (July 2026), page 6
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On a traffic sign, what does the color red mean?
- Services for travelers
- Recreation and cultural points of interest
- General warning of road hazards
- Stop, yield, or do what is shown on the sign
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Correct answer: Stop, yield, or do what is shown on the sign
Red is the standard color for signs telling you to stop, yield, or do what is shown.
Source: Iowa Driver’s License Manual (July 2026), page 6
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What type of information do white traffic signs provide?
- Regulatory information about enforceable laws and ordinances
- Direction to places and how far away they are
- Road work, temporary traffic control, and maintenance
- Warnings about special road hazards and sharp curves
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Correct answer: Regulatory information about enforceable laws and ordinances
White signs are regulatory: they provide information about enforceable laws and ordinances.
Source: Iowa Driver’s License Manual (July 2026), page 6
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Which color of traffic sign indicates where a place is, or how far a place is from where you are?
- Blue
- Green
- Brown
- Orange
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Correct answer: Green
Green signs give direction: where a place is or how far it is from where you are.
Source: Iowa Driver’s License Manual (July 2026), page 6
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What do blue traffic signs provide?
- Services for travelers
- Warnings about school zones
- Instructions about enforceable laws
- Historical sites and parks
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Correct answer: Services for travelers
Blue signs are for services for travelers, such as rest areas, hospitals, lodging, fuel stations and restaurants.
Source: Iowa Driver’s License Manual (July 2026), page 6
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What is the standard meaning of a yellow traffic sign?
- Regulatory information
- Road work warning
- General warning
- Recreation points of interest
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Correct answer: General warning
Yellow is the standard color for general warning signs.
Source: Iowa Driver’s License Manual (July 2026), page 6
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Which color of traffic sign marks road work, temporary traffic control, and maintenance warnings?
- Fluorescent pink
- Orange
- Yellow
- Fluorescent yellow-green
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Correct answer: Orange
Orange signs warn of road work, temporary traffic control, and maintenance.
Source: Iowa Driver’s License Manual (July 2026), page 6
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Where orange signs mark road work, what should you be sure to watch for?
- Pedestrians crossing at every intersection
- Trains stopping on the nearby tracks
- Rest areas and fuel stations ahead
- Changing speed limits and workers on the road
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Correct answer: Changing speed limits and workers on the road
Orange signs tell you to watch for changing speed limits and workers on the road.
Source: Iowa Driver’s License Manual (July 2026), page 6
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What do brown traffic signs mark?
- Services for travelers such as fuel and lodging
- Recreation and cultural points of interest
- Pedestrian and bicycle warnings
- Crash clean up and debris removal
Show answer
Correct answer: Recreation and cultural points of interest
Brown signs mark recreation and cultural points of interest, such as historical sites, parks and recreational areas.
Source: Iowa Driver’s License Manual (July 2026), page 6
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Which color of traffic sign is used for pedestrian, bicycle, and school warning signs?
- Fluorescent yellow-green
- Fluorescent pink
- Fluorescent orange
- Fluorescent red-orange
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Correct answer: Fluorescent yellow-green
Fluorescent yellow-green is the color for pedestrian, bicycle, and school warning signs.
Source: Iowa Driver’s License Manual (July 2026), page 6
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Which color of traffic sign is used for warning and guide signs for incident management such as crash clean up and debris removal?
- Fluorescent yellow-green
- Orange
- Brown
- Fluorescent pink
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Correct answer: Fluorescent pink
Fluorescent pink signs warn and guide for incident management such as crash clean up and debris removal.
Source: Iowa Driver’s License Manual (July 2026), page 6
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Which sign shape is reserved for a stop sign only?
- Pentagon
- Circle
- Octagon
- Rectangle
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Correct answer: Octagon
The octagon shape is reserved for a stop sign only.
Source: Iowa Driver’s License Manual (July 2026), page 7
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What does a sign shaped like an equilateral triangle tell you to do?
- Come to a full stop
- Slow down for a school crossing
- Yield the right of way
- Prepare for a railroad crossing
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Correct answer: Yield the right of way
The equilateral triangle shape means to yield the right of way.
Source: Iowa Driver’s License Manual (July 2026), page 7
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Which sign shape is used for regulatory, guide, and warning signs?
- Octagon
- Pennant
- Pentagon
- Rectangle
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Correct answer: Rectangle
Rectangular signs are used for regulatory, guide, and warning signs.
Source: Iowa Driver’s License Manual (July 2026), page 7
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What does a pennant-shaped sign warn you of?
- A no passing zone
- A school crossing
- A railroad crossing ahead
- A divided highway ahead
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Correct answer: A no passing zone
The pennant-shaped sign warns you of a no passing zone.
Source: Iowa Driver’s License Manual (July 2026), page 7
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On which side of the road will you see a pennant-shaped sign?
- The right side
- The left side
- Either side, depending on the number of lanes
- Over the center of the roadway
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Correct answer: The left side
The pennant-shaped no passing zone sign is on the left side of the road.
Source: Iowa Driver’s License Manual (July 2026), page 7
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What is the purpose of a diamond-shaped sign?
- To warn you of special road hazards
- To mark school areas
- To show how many sets of tracks you must cross
- To direct you to rest areas
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Correct answer: To warn you of special road hazards
Diamond-shaped signs are warning signs that alert you to special road hazards.
Source: Iowa Driver’s License Manual (July 2026), page 7
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On a diamond-shaped warning sign, what shows you why you need to slow down or use extra caution?
- The color of the sign’s border
- The position of the sign beside the road
- Words or pictures on the sign
- A flashing light attached to the sign
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Correct answer: Words or pictures on the sign
Words or pictures on a diamond warning sign show why you need to slow down or use extra caution.
Source: Iowa Driver’s License Manual (July 2026), page 7
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Which sign shape warns you that a railroad crossing is ahead?
- Octagon
- Circle
- Pennant
- Pentagon
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Correct answer: Circle
A circular sign means a railroad crossing is ahead.
Source: Iowa Driver’s License Manual (July 2026), page 7
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Which sign shape marks school areas and school crossings?
- Circle
- Octagon
- Equilateral triangle
- Pentagon
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Correct answer: Pentagon
The pentagon-shaped sign marks school areas and school crossings.
Source: Iowa Driver’s License Manual (July 2026), page 7
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What color are warning signs, and what shape are most of them?
- Yellow with black symbols; most are diamond-shaped
- White with black lettering; most are rectangular
- Red with white lettering; most are octagon-shaped
- Green with white lettering; most are pentagon-shaped
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Correct answer: Yellow with black symbols; most are diamond-shaped
Warning signs are yellow with black lettering or symbols, and most of them are diamond-shaped.
Source: Iowa Driver’s License Manual (July 2026), page 9