People and machines are working on or beside the road ahead. Orange always means a temporary work zone, and fines usually double inside it.
Slow to the work-zone limit, put the phone far away, and expect sudden stops, lane shifts, and workers steps from your mirror.
Yellow warns about the road; orange warns about people on the road.
Relaxing because no workers are visible. The lane shifts, fresh edges, and equipment are hazards whether or not anyone is standing there, and the doubled fines usually apply regardless.
Signs that live in the same family, or get confused with this one.
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