Construction and Work Zone Signs
Construction and Work Zone Signs use orange as their primary color. They warn of temporary conditions, changed traffic patterns, workers, equipment, and detours. This domain tests whether you can follow temporary controls, obey a flagger, and recognize that work-zone rules can differ from the normal road rules.
Core rules and concepts
- Orange signs include ROAD WORK AHEAD, FLAGGER AHEAD, BE PREPARED TO STOP, LANE CLOSED, and DETOUR.
- A flagger is authorized to stop, slow, and direct traffic. Their instructions override normal signals and signs at that location.
- A PILOT CAR FOLLOW ME sign means you must follow the pilot vehicle through the work zone and not pass it.
- Temporary speed limits and lane controls are regulatory when posted, even though the signs are orange.
- Detour signs guide you around a closure; barricades and cones mark areas you must not enter.
- Oregon law provides enhanced penalties for moving violations in work zones when workers are present.
Worked example
You pass an orange FLAGGER AHEAD sign, then see a flagger holding a SLOW paddle. The flagger is directing traffic, so you slow and follow the hand signal rather than the normal green light or the posted speed. If the flagger then turns the paddle to STOP, you stop and wait. The orange color does not make the instruction optional.
Traps
Do not assume ROAD WORK AHEAD means workers are present at that instant; the enhanced penalty usually depends on workers being present. Do not drive around a barricade or follow a navigation app into a closed lane. Do not pass a pilot car. Do not ignore a temporary speed sign because it is orange rather than white.