A warning sign shows a flagger ahead. What does the manual tell you to do?
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A.
Stop at the sign until an escort vehicle arrives.
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B.
Move to the shoulder and wait for the work to end.
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C.
Slow down and be ready to obey the flagger's signals. Correct
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D.
Maintain your speed until the flagger waves you through.
The answer is "Slow down and be ready to obey the flagger's signals."
The flagger-ahead sign puts you on notice to slow and follow the flagger's cues. Drivers who read the handheld STOP-sign rule earlier in the sign chapter carry that stop reflex into choice A, but that rule applies to a handheld STOP sign, not to the warning that a flagger is coming up.
The traps in the wrong answers
A. Stop at the sign until an escort vehicle arrives.
The manual does not require a full stop at the sign; you stop only when the flagger signals it. This answer carries the handheld STOP-sign rule over, where a raised STOP means come to a full stop right there.
B. Move to the shoulder and wait for the work to end.
The manual does not send you to the shoulder; it asks for reduced speed and readiness to obey the flagger's signals. This answer confuses the flagger sign with a lane closure directive that pushes traffic off the travel lane.
D. Maintain your speed until the flagger waves you through.
The manual requires reducing speed on the approach, not holding speed until the flagger acts. This answer assumes an active signal from the flagger is required before slowing, so the warning sign gets read as informational.
This question tests your knowledge of Construction Signs in Illinois. Source: Illinois Rules of the Road, "Construction and Maintenance Signs (Flagger)," p.73..
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