According to the Florida manual, above what speed are high beam headlights most effective for revealing objects ahead at night?
-
A.
45 MPH
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B.
25 MPH Correct
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C.
30 MPH
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D.
50 MPH
The answer is "25 MPH"
The manual pairs the 450-foot high-beam reach with a threshold: they earn their extra distance at speeds above 25 MPH. Choice C is the standard urban limit posted on most residential streets, which drivers who confuse a speed limit with the beam-effectiveness figure reach for.
The traps in the wrong answers
A. 45 MPH
45 MPH is not the manual's threshold for high-beam effectiveness. This answer reuses the golf-cart state-road crossing limit read a few pages later as the high-beam figure.
C. 30 MPH
30 MPH is the default residential speed limit, unrelated to high beams. This answer swaps the residential-street speed limit in for a figure the manual writes about headlight beams.
D. 50 MPH
50 MPH is the highway minimum where the limit is 70, not a beam figure. This answer borrows the highway minimum-speed number from the speed-limit table and uses it for a night-driving rule.
This question tests your knowledge of Adverse Conditions in Florida. Source: Florida Driver Manual, "Night Driving," p.73..
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