According to the Nevada manual, at what speed range do most cars begin to lose traction and hydroplane in heavy rainfall?
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A.
Between 35 and 55 mph Correct
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B.
Between 15 and 25 mph
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C.
Between 25 and 35 mph
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D.
Between 55 and 75 mph
The answer is "Between 35 and 55 mph"
The Stopping section fixes the hydroplane onset range at 35 to 55 mph, which spans typical main-road and low-freeway speeds. The wrong answers bracket the range too low (city speeds) and too high (highway speeds) to catch drivers who half-remember the number.
The traps in the wrong answers
B. Between 15 and 25 mph
Sets the hydroplane threshold far below the manual's 35 mph lower bound. Confuses hydroplane onset with the low speeds where drivers first feel tires slip pulling away from a wet stoplight.
C. Between 25 and 35 mph
Understates the start of the hydroplane range; the manual sets the lower bound at 35 mph. Rounds the number down toward residential-street speeds, the range where wet-road caution is usually first taught.
D. Between 55 and 75 mph
Overshoots the 35-to-55 mph hydroplane range the manual gives. Treats hydroplaning as a freeway-only hazard and shifts the answer up into interstate cruise speeds where a driver most fears losing control.
This question tests your knowledge of Adverse Conditions in Nevada. Source: Nevada Driver Manual, "Chapter 3, Stopping," p.41..
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