Illinois: Sign shapes and colors Practice Test
What each sign shape and color tells you before you read it.
Independent educational site · not affiliated with any government agency or DMV
Ready? Test yourself
- Instant feedback with an explanation
- Every answer cites its source in the manual
- Your best score is saved on this device
Questions are original and based on the official manual "Illinois Rules of the Road" (2026), Illinois Secretary of State.
All 22 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.
Show the questions and answersHide the questions
-
What does an eight-sided red sign mean?
- STOP
- YIELD
- DO NOT ENTER
- WRONG WAY
Show answer
Correct answer: STOP
The manual states that the eight-sided red sign means STOP, and you must make a complete stop.
Source: Illinois Rules of the Road (2026), page 63
-
What colors are YIELD signs?
- Yellow and black
- Orange and black
- Red and white
- Green and white
Show answer
Correct answer: Red and white
The three-sided YIELD sign is red and white.
Source: Illinois Rules of the Road (2026), page 63
-
What does a three-sided sign that is red and white mean?
- STOP
- YIELD the right of way
- No passing zone
- Railroad crossing ahead
Show answer
Correct answer: YIELD the right of way
This three-sided sign means YIELD the right of way; you must let all traffic and pedestrians go before proceeding.
Source: Illinois Rules of the Road (2026), page 63
-
What does a round sign indicate?
- A school zone or crossing
- A no passing zone ahead
- An unplanned traffic incident
- A railroad crossing ahead
Show answer
Correct answer: A railroad crossing ahead
The round sign indicates a RAILROAD CROSSING ahead and is an advance warning sign.
Source: Illinois Rules of the Road (2026), page 63
-
What does a diamond-shaped sign mean?
- WARNING
- STOP
- Services ahead
- Parks and recreation
Show answer
Correct answer: WARNING
A diamond-shaped sign means WARNING; it warns about hazards or possible hazards on or near the roadway.
Source: Illinois Rules of the Road (2026), page 63
-
Which colors may a diamond-shaped WARNING sign be?
- Red, white, blue, or black
- Green, blue, brown, or white
- Yellow, yellow-green, or orange
- Pink, green, white, or black
Show answer
Correct answer: Yellow, yellow-green, or orange
A diamond-shaped WARNING sign may be yellow, yellow-green, or orange with black wording or symbols.
Source: Illinois Rules of the Road (2026), page 63
-
What does a five-sided yellow or yellow-green sign with black symbols mean?
- No passing zone on a two-lane road
- School zone or school crossing
- Railroad crossing ahead
- Construction or maintenance zone
Show answer
Correct answer: School zone or school crossing
The five-sided sign means either SCHOOL ZONE or SCHOOL CROSSING.
Source: Illinois Rules of the Road (2026), page 64
-
What does a three-sided yellow sign with black letters indicate?
- YIELD the right of way
- A merging lane ahead
- A NO PASSING ZONE
- A school crossing
Show answer
Correct answer: A NO PASSING ZONE
The three-sided yellow sign with black letters indicates a NO PASSING ZONE.
Source: Illinois Rules of the Road (2026), page 64
-
Square and rectangular signs can be used as which types of signs?
- Railroad and school signs only
- Warning signs only
- Construction signs only
- Regulatory or guide signs
Show answer
Correct answer: Regulatory or guide signs
The manual says squares and/or rectangles can be used either as regulatory or guide signs.
Source: Illinois Rules of the Road (2026), page 64
-
What do RED signs mean?
- They are regulatory signs and must be obeyed
- They are guide signs for services ahead
- They warn of construction work ahead
- They mark parks and recreation areas
Show answer
Correct answer: They are regulatory signs and must be obeyed
RED signs are regulatory signs and must be obeyed; they include STOP, YIELD, DO NOT ENTER, and WRONG WAY.
Source: Illinois Rules of the Road (2026), page 64
-
Which of these signs is listed in the manual as a RED regulatory sign?
- SPEED ZONE AHEAD
- ROAD NARROWS
- WRONG WAY
- PASS WITH CARE
Show answer
Correct answer: WRONG WAY
RED regulatory signs include STOP, YIELD, DO NOT ENTER, and WRONG WAY.
Source: Illinois Rules of the Road (2026), page 64
-
What are BLACK and WHITE signs used for?
- Only for warning drivers of construction zones ahead
- Some are regulatory signs; others are route markers
- Only for listing services such as gas and food
- Only for marking parks and recreation areas nearby
Show answer
Correct answer: Some are regulatory signs; others are route markers
Some BLACK and WHITE signs are regulatory signs and must be obeyed; others are used as route markers.
Source: Illinois Rules of the Road (2026), page 64
-
What is the color YELLOW used for on signs?
- Guide signs
- Parks and recreation
- Traffic incidents
- Warning signs
Show answer
Correct answer: Warning signs
YELLOW is used for warning signs, which tell you of road conditions and dangers ahead.
Source: Illinois Rules of the Road (2026), page 64
-
YELLOW-GREEN warning signs alert you to which of these?
- Pedestrian and bicycle crossings, playgrounds, and school zones
- Construction and maintenance projects on the highway
- Unplanned traffic incidents such as crashes and disasters
- Gas, food, lodging, and hospital services along the road
Show answer
Correct answer: Pedestrian and bicycle crossings, playgrounds, and school zones
YELLOW-GREEN warning signs alert you to pedestrian and bicycle crossings, playground areas, school bus stops, and school zones.
Source: Illinois Rules of the Road (2026), page 64
-
Where are ORANGE warning signs usually found?
- Near parks and recreation areas
- At school crossings
- In construction or maintenance zones
- At railroad crossings
Show answer
Correct answer: In construction or maintenance zones
ORANGE is used for warning signs usually found in construction or maintenance zones along streets and highways.
Source: Illinois Rules of the Road (2026), page 64
-
What do GREEN guide signs tell you?
- About services such as food and lodging
- Where you are and which way to go
- About dangers from unplanned traffic incidents
- Which actions are not allowed ahead
Show answer
Correct answer: Where you are and which way to go
GREEN is used for guide signs that tell you where you are, which way to go, and the distance to upcoming destinations.
Source: Illinois Rules of the Road (2026), page 64
-
What do BLUE guide signs tell you about?
- Construction work ahead
- Parks and recreation areas
- Unplanned traffic incidents
- Services along the roadway
Show answer
Correct answer: Services along the roadway
BLUE is also used for guide signs, which tell you about services along the roadway.
Source: Illinois Rules of the Road (2026), page 65
-
Which sign color is used for parks and recreation signs?
- Brown
- Blue
- Pink
- Yellow-green
Show answer
Correct answer: Brown
BROWN is used for parks and recreation signs.
Source: Illinois Rules of the Road (2026), page 65
-
Which sign color may be used for traffic incident signing, such as for crashes and natural disasters?
- Orange
- Brown
- Pink
- Blue
Show answer
Correct answer: Pink
PINK may be used for traffic incident signing, alerting you to dangers from unplanned incidents such as crashes and natural disasters.
Source: Illinois Rules of the Road (2026), page 65
-
What does a sign with a red circle and a red slash from upper left to lower right mean?
- The action pictured inside the circle is not allowed
- The action pictured inside the circle is required
- The action pictured is allowed only at night
- A hazard shown in the picture is ahead
Show answer
Correct answer: The action pictured inside the circle is not allowed
Signs with a red circle and red slash mean a particular action is not allowed; the picture within the circle shows what is not allowed.
Source: Illinois Rules of the Road (2026), page 66
-
What shape are most guide signs?
- Diamond
- Rectangular
- Round
- Five-sided
Show answer
Correct answer: Rectangular
Most guide signs are rectangular; however, guide signs for county roads and route markers on freeways are different in shape.
Source: Illinois Rules of the Road (2026), page 74
-
What determines the color of a guide sign?
- The speed limit of the road
- The county the road is in
- The time of day it is used
- The type of information given
Show answer
Correct answer: The type of information given
The type of information given determines the color of the guide sign.
Source: Illinois Rules of the Road (2026), page 74