Driver's License Test Prep
Illinois Practice Traffic Lights

The light turns green as you reach the intersection. What must you do first?

  1. A.
    Wait five seconds to confirm the light stays green.
  2. B.
    Yield to any pedestrians and vehicles still in the intersection. Correct
  3. C.
    Accelerate through before cross traffic can react.
  4. D.
    Signal your direction of travel to other drivers.
The Why

The answer is "Yield to any pedestrians and vehicles still in the intersection."

Green permits movement only after any pedestrians or vehicles already inside the intersection or crosswalk have cleared. C is the trap for drivers who read green as absolute right of way and forget that a late-yellow left-turner still finishes their turn.

Why the others miss

The traps in the wrong answers

A. Wait five seconds to confirm the light stays green.

The manual sets no waiting period once the light is green and the crossing is clear. This answer invents a stability check the manual never requires, likely borrowed from stale caution advice.

C. Accelerate through before cross traffic can react.

The green obliges you to yield to those already crossing, not to race them. This answer reads green as absolute priority and dismisses drivers finishing a late yellow through the intersection.

D. Signal your direction of travel to other drivers.

Turn signals apply to lane changes and turns; a through green does not require one. This answer adds a signal step the green light itself does not call for.

The Rule

This question tests your knowledge of Traffic Lights in Illinois. Source: Illinois Rules of the Road, "Traffic Signals - Steady Lights," p.77..

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