Idaho: Sign shapes and colors Practice Test
What the shape and 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 "Idaho Driver's Handbook" (July 2026), Idaho Transportation Department.
All 11 questions in this practice test
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How does the manual say you should learn to recognize traffic signs?
- By their size and the height at which they are mounted
- By the order in which they appear along the road
- By color and shape as well as the messages or symbols they carry
- By the lettering style used on each sign
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Correct answer: By color and shape as well as the messages or symbols they carry
The manual says to learn to recognize signs by color and shape as well as the messages or symbols they carry.
Source: Idaho Driver's Handbook (July 2026), page 44 · Open this page in the manual (Manual page 44)
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What colors are regulatory signs generally?
- Black on yellow
- Black and white
- Orange and black
- Green and white
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Correct answer: Black and white
Regulatory signs are generally black and white, although some are red and white.
Source: Idaho Driver's Handbook (July 2026), page 44 · Open this page in the manual (Manual page 44)
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Work zones are commonly identified with signs of which color?
- Green
- Orange
- Blue
- Brown
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Correct answer: Orange
Work zones are commonly identified with orange signs, cones, drums, barricades, or flashing arrow panels.
Source: Idaho Driver's Handbook (July 2026), page 46 · Open this page in the manual (Manual page 46)
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What colors are warning signs in a work zone?
- Orange and black
- Black on yellow
- Red and white
- Black and white
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Correct answer: Orange and black
Warning signs in a work zone are orange and black.
Source: Idaho Driver's Handbook (July 2026), page 46 · Open this page in the manual (Manual page 46)
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What color and shape are most warning signs?
- Black on white and rectangular
- Black on yellow and diamond-shaped
- White on red and octagonal
- White on green and rectangular
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Correct answer: Black on yellow and diamond-shaped
Most warning signs are black on yellow and diamond-shaped.
Source: Idaho Driver's Handbook (July 2026), page 49 · Open this page in the manual (Manual page 49)
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Which warning signs are fluorescent yellow/green?
- Open range signs
- Intersection warning signs
- Merging traffic signs
- School warning signs
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Correct answer: School warning signs
Warning signs include the fluorescent yellow/green school warning signs.
Source: Idaho Driver's Handbook (July 2026), page 49 · Open this page in the manual (Manual page 49)
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The School Zone sign may be which colors?
- Only fluorescent yellow/green, never plain yellow
- White or fluorescent orange
- Orange or fluorescent yellow
- Yellow or fluorescent yellow/green
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Correct answer: Yellow or fluorescent yellow/green
The color of the School Zone sign may be yellow or fluorescent yellow/green.
Source: Idaho Driver's Handbook (July 2026), page 50 · Open this page in the manual (Manual page 50)
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Which color may a pedestrian crossing sign be, instead of regular yellow?
- Fluorescent orange/red
- Fluorescent white/blue
- Fluorescent brown/orange
- Fluorescent yellow/green
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Correct answer: Fluorescent yellow/green
The pedestrian crossing sign may be fluorescent yellow/green.
Source: Idaho Driver's Handbook (July 2026), page 51 · Open this page in the manual (Manual page 51)
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Guide signs that are white on green are used for what?
- Cultural or scenic points of interest
- Directional and distance information
- Motorist's services such as gas and food
- Warnings about road conditions ahead
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Correct answer: Directional and distance information
The manual says white on green guide signs are for directional and distance information.
Source: Idaho Driver's Handbook (July 2026), page 53 · Open this page in the manual (Manual page 53)
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Guide signs that are white on blue are used for what?
- Directional and distance information
- Motorist's services
- Cultural, historical, or scenic points of interest
- Temporary traffic control in work zones
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Correct answer: Motorist's services
White on blue guide signs mark motorist's services.
Source: Idaho Driver's Handbook (July 2026), page 53 · Open this page in the manual (Manual page 53)
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Which color combination do guide signs use for cultural, historical, or scenic points of interest?
- White on green
- White on blue
- Black on yellow
- White on brown
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Correct answer: White on brown
Guide signs for cultural, historical, or scenic points of interest are white on brown.
Source: Idaho Driver's Handbook (July 2026), page 53 · Open this page in the manual (Manual page 53)