What does the Low Clearance warning sign tell you?
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A.
The overpass ahead has limited vertical clearance Correct
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B.
The bridge ahead has a posted weight limit
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C.
A narrow bridge ahead has one lane each way
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D.
The bridge surface freezes before the rest of the road
The answer is "The overpass ahead has limited vertical clearance"
The Low Clearance sign warns that the overpass ahead has limited vertical clearance, and you should not proceed if your vehicle is too tall to pass under it. Weight limits, narrow bridges, and bridge icing are each warned by separate signs.
The traps in the wrong answers
B. The bridge ahead has a posted weight limit
Weight limits appear on regulatory signs, not the Low Clearance warning. Misreading: Confuses a vertical clearance warning with a regulatory weight-limit restriction.
C. A narrow bridge ahead has one lane each way
Narrow bridge has its own warning sign separate from Low Clearance. Misreading: Substitutes a different bridge-width warning for the overpass-height warning.
D. The bridge surface freezes before the rest of the road
Bridge icing is a different warning sign that calls out freezing surfaces. Misreading: Confuses the overpass clearance warning with a bridge-icing surface-condition warning.
This question tests your knowledge of Warning Signs in Oregon. Source: Oregon Driver Manual, "Warning Signs," p.12..
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