Illinois Road Sign Practice Test

How road signs are tested in Illinois

Road sign questions are part of the Illinois written knowledge test (35 multiple-choice questions, 28 right to pass). Know the signs well and those questions become easy points.

Signs from the Illinois Rules of the Road (2026 (DSD A 112.47)). What every kind of sign means, by shape and color: our road sign guide.

Signs the Illinois Rules of the Road adds

• Right of Way

  Coming out of an alley, building, private road or driveway, stop completely and yield to traffic; on the ending road of a T intersection with no signs, yield to cross traffic. p. 26

• Slow-Moving Vehicles

  Slow-moving farm, construction and animal-drawn vehicles usually go 5–20 mph, so you close on them fast; they may make wide turns into unmarked entrances, so stay back and pass only when safe and they know you're there. p. 46

• Shapes of Signs

  The yellow three-sided NO PASSING ZONE sign is posted on the left side of a two-lane, two-way road where the no-passing pavement markings begin. p. 64

• Reduction in Lanes

  When a lane ends: in light traffic merge into the open lane early; in congestion use both lanes up to the merge point and take turns (the 'zipper merge'). p. 71

• Yield

  YIELD signs may be posted on expressway ramps where there's no extra lane to speed up and merge; at a yield sign slow down, stop if needed at the crosswalk or before the intersection. p. 65

• Speed Limit

  Some signs on freeways show a maximum and a minimum speed; driving below the minimum is illegal unless it's necessary for safety. A SPEED ZONE AHEAD sign means get ready to change speed. p. 66

• No Turn on Red

  A NO TURN ON RED sign bans right turns on red, and left turns on red between one-way streets; it may show a red circle instead of the word RED. p. 67

• Pass with Care

  DO NOT PASS means no passing (with yellow no-passing lines); PASS WITH CARE marks the end of the no-passing zone, where you may pass only when safe; ROAD CLOSED means you may not continue. p. 68

• Construction Zones

  The construction zone speed limit applies 24 hours a day, every day, whether or not workers are present; slow down, stop handheld phone use, yield to workers and vehicles, and move to a lane away from workers when you can. p. 25

• Colors of Signs

  Blue signs mean: motorist services. p. 65

• Railroad Crossing

  If your car stalls on the tracks, get everyone out, call 911 and the railroad's emergency number on the blue sign at the crossing; with a manual transmission, shift down before the tracks and don't change gears while crossing; never race a train. p. 34

• Shapes of Signs

  The round yellow RR sign is an advance warning of a crossing ahead (up to 750 feet before it in rural areas): slow down, look, roll down your windows to listen, stop if needed, and never race the train. p. 63

• Pedestrian Crosswalk

  A pedestrian crossing sign means slow down and yield to pedestrians in the crosswalk. p. 68

• Railroad Crossings

  A crossbuck is treated as a yield sign: yield to any trains; a plate below shows the number of tracks if there's more than one. p. 81

• Shapes of Signs

  An eight-sided (octagon) sign always means stop. p. 63

• Shapes of Signs

  A downward-pointing triangle sign means yield. p. 63

• Shapes of Signs

  A pennant-shaped sign (a sideways triangle) marks a no-passing zone. p. 64