In heavy rain or snow that cuts your visibility to 100 feet, what is the fastest you may safely drive?
-
A.
15 mph
-
B.
30 mph Correct
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C.
55 mph
The answer is "30 mph"
When you cannot see farther than 100 feet in heavy rain or snow, the manual caps your speed at 30 mph. Choice C keeps the two-lane highway posted limit intact rather than dropping to the specific figure the manual sets for low-visibility conditions.
The traps in the wrong answers
A. 15 mph
This sits below the manual's 30 mph cap for 100-foot visibility. This answer reaches for a familiar reduced-speed number from school zones or blind-intersection rules rather than the specific 100-foot visibility figure the manual sets.
C. 55 mph
This is a two-lane highway posted limit, not a low-visibility cap. This answer keeps the highway posted limit intact without adjusting for the visibility rule the manual applies in heavy rain or snow.
This question tests your knowledge of Speed Limits in California. Source: California Driver Manual, "Slippery Roads," p.62..
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