Driver's License Test Prep
Oregon Practice Construction Signs

An automated flagger device shows a flashing yellow light with its stop arm up. You should:

  1. A.
    Proceed through the work zone Correct
  2. B.
    Come to a full stop
  3. C.
    Yield to oncoming traffic before moving
  4. D.
    Treat it as a flashing red signal
The Why

The answer is "Proceed through the work zone"

Automated flagger devices have red and yellow lights and a stop arm. The manual states that drivers proceed when the yellow light is flashing and the arm is up; that is the device's go signal, the equivalent of a flagger waving you through. It is not a stop, not a yield, and not a flashing red. Drive through with normal caution for the work zone around you.

Why the others miss

The traps in the wrong answers

B. Come to a full stop

The manual reserves stopping for when the red light is on and the arm is down. Misreading: Confuses the device's stop position (red light, arm down) with its proceed position (yellow flashing, arm up).

C. Yield to oncoming traffic before moving

The device controls one direction of travel; oncoming traffic is held by its own signal. Misreading: Treats the automated flagger like a yield sign rather than a directional traffic signaler that controls one lane at a time.

D. Treat it as a flashing red signal

Flashing red is treated like a stop sign; the signal here is yellow and the arm is up. Misreading: Substitutes the flashing red signal rule for the automated flagger's distinct yellow proceed signal.

The Rule

This question tests your knowledge of Construction Signs in Oregon. Source: Oregon Driver Manual, "Work Zones," p.59..

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