At an automated flagger device with the red light on and the stop arm down, you must:
-
A.
Stop and remain stopped Correct
-
B.
Treat it as a four-way stop
-
C.
Slow to 20 mph and proceed
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D.
Yield, then continue if traffic is clear
The answer is "Stop and remain stopped"
An automated flagger device has the same authority as a human flagger. When the red light is on and the stop arm is lowered, the device is signaling stop. Stay stopped until the light changes to flashing yellow and the arm rises. Drivers who read the red-and-yellow lights as a normal traffic light often pick "yield when clear," borrowing the flashing-red rule that lets a driver proceed after stopping if traffic is clear; the lowered stop arm removes that option.
The traps in the wrong answers
B. Treat it as a four-way stop
A four-way stop rule only applies at four-way stop intersections. Reaches for the take-turns rule familiar from four-way stops when facing an unfamiliar automated signal, expecting to advance after whichever vehicle stopped first.
C. Slow to 20 mph and proceed
20 mph is the school speed zone limit, not the response to a stop arm. Treats 20 mph as the standard reduced work zone speed and rolls through the stopped signal instead of stopping.
D. Yield, then continue if traffic is clear
Red plus lowered arm means stop, not yield. Treats the red-and-yellow lights like a flashing-red intersection signal, where a driver may proceed after stopping once traffic is clear.
This question tests your knowledge of Construction Signs in Oregon. Source: Oregon Driver Manual, "Work Zones," p.59..
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