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Alabama Class D Learner License Practice Test
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Passing target: 80% (24/30)
Warning, Construction & Information SignsStandalone practice
A yellow diamond shows vertical arrows and a height such as 12 FT 6 IN. What does the number describe?

Correct answer: The height clearance under the structure ahead.
Why
A vehicle or load taller than the posted clearance must not proceed beneath the obstruction.
Verified against Alabama Driver Manual · Low clearance warning · p. 50
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