What does this Speed Limit 50 sign tell a driver about 50 mph on this roadway?
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A.
50 mph is the maximum legal speed on this roadway. Correct
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B.
50 mph is the required minimum speed for through traffic here.
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C.
50 mph is an advisory speed for a curve or hazard ahead.
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D.
Drivers should target 50 mph as the ideal cruising speed here.
The answer is "50 mph is the maximum legal speed on this roadway."
The sign posts the statutory maximum for the road ahead, so 50 mph is the ceiling, the highest speed a driver may legally travel until another speed limit sign changes it. Nothing on this sign requires driving 50 mph; it caps the speed rather than mandating it. Drivers who read the number as a required minimum are borrowing the look of a different white rectangle specifically labeled MINIMUM SPEED or MINIMUM SPEED LIMIT.
The traps in the wrong answers
B. 50 mph is the required minimum speed for through traffic here.
This sign posts a ceiling for every vehicle; a minimum speed would be shown by signage specifically labeled MINIMUM SPEED or MINIMUM SPEED LIMIT. Reads the number as a floor because a matching-looking regulatory rectangle is used on some freeways to bar slow driving in through lanes.
C. 50 mph is an advisory speed for a curve or hazard ahead.
Advisory speeds appear on yellow diamond warning signs paired with a curve, ramp, or turn arrow, not on this white regulatory sign. Confuses the fixed statutory ceiling with the conditional number a yellow curve plaque posts for one specific hazard.
D. Drivers should target 50 mph as the ideal cruising speed here.
The sign fixes a legal upper limit, not a speed drivers are expected to match. Comes from the habit of pacing traffic at the posted number rather than reading it as a ceiling that road, weather, or traffic can push well below.
This question tests your knowledge of Regulatory Signs on the roads of every US state . Source: Manual on Uniform Traffic Control Devices, sign R2-1 (Speed Limit 50)..
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