This sign indicates:

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The maximum width of a vehicle allowed on the highway.
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The maximum legal height allowed in this State.
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A steep grade is ahead.
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The overpass ahead has a low clearance.
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Explanation
This sign is a low clearance warning. It's commonly posted on an underpass, or at the entrance to a tunnel or parking garage. If your vehicle's height exceeds the limit listed on the sign, you should not proceed. Entering with a taller vehicle may result in a collision or getting stuck.
Answer Statistics
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Massachusetts RMV Practice Test 1South Carolina DMV Practice Test 1Georgia DMV Practice Test 3Hawaii DMV Practice Test 4North Carolina DMV Practice Test 5Wisconsin DMV Practice Test 5Arizona DMV Practice Test 8New Jersey DMV Practice Test 8Iowa DMV Practice Test 9District of Columbia DMV Practice Test 9