You approach a ONE LANE BRIDGE warning sign on a two-lane road. What does the Florida manual require before you cross?
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A.
Yield only to oncoming trucks and buses at the bridge.
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B.
Stay in your lane; the bridge fits two lanes with tight clearance.
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C.
Confirm the bridge is clear of oncoming traffic before crossing. Correct
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D.
Reduce your speed to the 20 MPH school-zone limit.
The answer is "Confirm the bridge is clear of oncoming traffic before crossing."
The bridge holds only one vehicle at a time, so the driver must confirm the span is clear of oncoming traffic before entering. The tempting wrong answer is the stay-in-your-lane response, because drivers group the two bridge signs into one instruction and repeat the Narrow Bridge rule that sits next to this one in the manual.
The traps in the wrong answers
A. Yield only to oncoming trucks and buses at the bridge.
The rule applies to every oncoming vehicle, not just heavy vehicles; only one vehicle at a time may occupy the bridge. This answer narrows the yield to heavy vehicles from the shared-road rule about CMVs swinging wide.
B. Stay in your lane; the bridge fits two lanes with tight clearance.
That instruction belongs to Narrow Bridge; a one-lane bridge does not carry two lanes at once. This answer groups the two bridge signs into a single instruction, repeating the Narrow Bridge rule beside it.
D. Reduce your speed to the 20 MPH school-zone limit.
The 20 MPH figure comes from the school-zone speed limit and does not attach to the One Lane Bridge sign. This answer reaches for the school-zone number as a generic slow-down for narrow passages.
This question tests your knowledge of Warning Signs in Florida. Source: Florida Driver Manual, "Warning Signs: One Lane Bridge," p.50..
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