What is the minimum visual acuity Illinois accepts, with or without corrective lenses, for a full driver's license?
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A.
20/40 Correct
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B.
20/70
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C.
20/20
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D.
20/30
The answer is "20/40"
Illinois sets 20/40 as the minimum visual acuity for a full license, with correction allowed. The 20/70 figure appears in the next sentence, but it names the far end of the daylight-only restriction range, and a reader who mixed the two numbers reaches for the higher one.
The traps in the wrong answers
B. 20/70
The 20/70 figure marks the far end of the daylight-only restriction range, not a passing score for a full license. This answer reads the daylight-restriction ceiling as the passing floor because the two figures sit in adjacent sentences.
C. 20/20
Illinois does not require perfect 20/20 vision for a driver's license. This answer treats a common eye-chart benchmark as the state's licensing bar.
D. 20/30
Illinois does not set the vision threshold at 20/30 for licensing. This answer picks a middle value between the 20/20 ideal and the actual state minimum.
This question tests your knowledge of Licensing Process in Illinois. Source: Illinois Rules of the Road, "Chapter 2: Vision Screening," p.13..
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