Illinois road sign library

Every sign, signal and marking the Illinois driver manual shows or names, with its meaning in the manual's words and its page.

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Regulatory signs - Illinois

$250 FINE
The manual does not state it
Manual page 36
Blank White Vertical Rectangle
Squares and/or rectangles can be used either as regulatory or guide signs.
Manual page 64
STOP
An eight-sided (octagon) sign tells you to always make a full stop at the stop line. If there is no stop line, stop before entering the crosswalk. If there is no crosswalk, stop before entering the intersection. Yield the right of way to pedestrians and approaching traffic. [p63: This eight-sided red sign means STOP. ... If the STOP sign is handheld, stop until an authorized person, such as a school guard or construction zone flagger, signals that it is safe to proceed.]
Manual page 65
STOP with ALL WAY Plaque
This sign means there are STOP signs at each approach to an intersection. Traffic from all directions must stop. The first driver to stop is the first driver to go. Other drivers must wait for their turn. You may also see 3-WAY, 5-WAY, or ALL-WAY signs underneath the stop sign.
Manual page 65

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Warning signs - Illinois

Blank Yellow Pentagon
This five-sided sign is yellow or yellow-green with black symbols. It means either SCHOOL ZONE or SCHOOL CROSSING. If the sign shows two children walking, a school is nearby. If the sign shows two children walking with a downward pointing arrow, you are at a school crossing.
Manual page 64
Speed Zone Ahead
This sign warns you that there is a speed zone ahead. Be prepared to alter your current speed.
Manual page 66
Pedestrian Crosswalk
This sign tells you there is a crosswalk. Crosswalks are not always located at intersections, so you must watch both sides of the street for pedestrians. Pedestrian crosswalk signs may also be accompanied by a yellow flashing beacon located on the sign.
Manual page 68
Pedestrian Crosswalk (fluorescent, arrow plaque)
This sign tells you there is a crosswalk. Crosswalks are not always located at intersections, so you must watch both sides of the street for pedestrians.
Manual page 68

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Work zone signs - Illinois

Blank Orange Warning Diamond
This diamond-shaped sign means WARNING. It may be yellow, yellow-green, or orange with black wording or symbols. This sign warns you about hazards or possible hazards on or near the roadway. Slow down and use caution when you see this type of sign.
Manual page 63
ROAD CONSTRUCTION 1500 FT
These signs are posted far enough ahead to give you time to adjust your vehicle speed for any unusual conditions. When you see these signs, workers may be working close to your traffic lane. Follow the signs and adjust your vehicle speed to the posted construction zone speed limit, stay alert, and keep a safe distance between your vehicle and all traffic barriers.
Manual page 73
ONE LANE ROAD 1000 FT
These signs are posted far enough ahead to give you time to adjust your vehicle speed for any unusual conditions. When you see these signs, workers may be working close to your traffic lane. Follow the signs and adjust your vehicle speed to the posted construction zone speed limit, stay alert, and keep a safe distance between your vehicle and all traffic barriers.
Manual page 73
Workers Ahead
These signs are posted far enough ahead to give you time to adjust your vehicle speed for any unusual conditions. When you see these signs, workers may be working close to your traffic lane. Follow the signs and adjust your vehicle speed to the posted construction zone speed limit, stay alert, and keep a safe distance between your vehicle and all traffic barriers.
Manual page 73

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Guide and service signs - Illinois

Interstate Route Marker
These signs are used alone or with smaller signs. They direct you to specific roads. Different routes have different markings.
Manual page 74
NORTH ILLINOIS 47 (arrow)
These signs are used alone or with smaller signs. They direct you to specific roads. Different routes have different markings.
Manual page 74
U.S. Route Marker
These signs are used alone or with smaller signs. They direct you to specific roads. Different routes have different markings.
Manual page 74
JCT ILLINOIS 47
These signs are used alone or with smaller signs. They direct you to specific roads. Different routes have different markings.
Manual page 74

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Traffic signals - Illinois

Red Light
Red Light — Stop at the marked stop line. If there is no marked stop line, stop before entering the crosswalk. If there is no crosswalk, stop before entering the intersection. Do not go until the light is green and the intersection is clear. You may turn right at a red light unless there is a sign prohibiting it. You also may turn left at a red light when turning from a one-way street onto another one-way street that has traffic moving to the left. In both instances, come to a complete stop and yield the right of way to oncoming traffic and pedestrians before turning.
Manual page 77
Yellow Light
Yellow Light — The yellow light warns that the signal is changing from green to red. When the red light appears, do not enter the intersection.
Manual page 77
Green Light
Green Light — You may go after yielding the right of way to any pedestrians and vehicles in the intersection or crosswalk.
Manual page 77
Flashing Red
Flashing Red — You must stop, yield the right of way to traffic within the intersection or crosswalk, and proceed when safe. This light is used at intersections when a stop sign alone is hard to see or where additional emphasis on the stop sign is needed. It is also used at railroad crossings to warn of approaching trains.
Manual page 77

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Pavement markings - Illinois

Striped Accessible Parking Access Aisle
A striped area on the pavement next to an accessible parking space is part of the reserved space. Vehicles may not use this striped area for parking, even if they have a parking placard or disability license plates.
Manual page 35
Bike Lane
These lanes are marked by a solid white line that becomes a dotted line ending before it reaches the corner. Bicycle lanes are sometimes painted a bright green color to increase visibility.
Manual page 68
Edge Lines
Solid lines along the side of the road tell you where the edge of the pavement is located. Solid white lines are used on the right of the roadway edge. Solid yellow lines are used on the left edge of divided streets or roadways.
Manual page 79
White Lane Lines (Broken)
Broken white lines separate lanes of traffic moving in the same direction. Crossing the line is only allowed when changing lanes or turning.
Manual page 79

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Railroad crossings and other signs - Illinois

Slow-Moving Vehicle Emblem
A vehicle displaying this sign is moving slowly. You must slow down and may pass only when safe and legal to do so. [p46: An orange slow-moving vehicle emblem must be on the rear of certain slow-moving vehicles.]
Manual page 74
CLASS 1 Explosives (1.1, 1.2, 1.3)
Hazardous materials placard is a sign that indicates the presence and type of hazardous material being transported on roadways. Placards use symbols, colors and text to communicate the hazard and are placed on the outside of transport vehicles, containers, or packages.
Manual page 75
CLASS 1 Explosives 1.4
Hazardous materials placard is a sign that indicates the presence and type of hazardous material being transported on roadways. Placards use symbols, colors and text to communicate the hazard and are placed on the outside of transport vehicles, containers, or packages.
Manual page 75
CLASS 1 Blasting Agents 1.5
Hazardous materials placard is a sign that indicates the presence and type of hazardous material being transported on roadways. Placards use symbols, colors and text to communicate the hazard and are placed on the outside of transport vehicles, containers, or packages.
Manual page 75