A SPEED ZONE AHEAD sign appears on the roadway. What should you do?
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A.
Be prepared to alter your current speed. Correct
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B.
Increase speed to clear the zone quickly.
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C.
Stop and check the posted speed limit.
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D.
Report the sign to local law enforcement.
The answer is "Be prepared to alter your current speed."
A SPEED ZONE AHEAD sign warns of a coming change in the posted speed limit, so be ready to adjust your speed. Choice B is the trap: drivers who read 'zone' as a construction zone try to speed through and clear it, but this sign only announces a coming limit change to obey.
The traps in the wrong answers
B. Increase speed to clear the zone quickly.
The sign warns of a coming speed-zone change, so you should be ready to adjust speed as posted; it is not an instruction to speed up and clear the area. This answer reads 'zone' as a construction area to accelerate through, borrowing a clearing habit.
C. Stop and check the posted speed limit.
The sign only asks drivers to be ready to adjust speed, not to stop. This answer confuses an advance notice about a coming speed change with signs that command an immediate action, like STOP.
D. Report the sign to local law enforcement.
The sign is a standard advance warning, not a call for driver reporting. This answer treats 'zone' as a special enforcement area needing driver notification.
This question tests your knowledge of Regulatory Signs in Illinois. Source: Illinois Rules of the Road, "Regulatory Signs, Speed Zone Ahead," p.66..
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