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Illinois Class D Written Exam Practice
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Freeways & High-Speed RoadsStandalone practice
In dense, slow traffic approaching a construction lane reduction, what merge method helps traffic move predictably?
Four cars queue in two lanes near a coned right-lane closure. A is blue; B and the two following cars are silver. The card names only slow traffic and the closing lane.
Correct answer: Use both lanes to the merge point, then take turns.
Why
At a congested reduction, using both lanes and alternating at the merge point creates an orderly zipper merge.
Verified against Illinois Rules of the Road, July2026 · Merging at a congested lane reduction · p. 89
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