Construction and Work Zone Signs
Construction and Work Zone Signs
Construction signs are temporary traffic control devices, usually orange with black legends. The exam tests whether you recognize work-zone warnings, obey flaggers and posted limits, follow detours, and respect the higher penalties that apply in work zones. Orange means construction or maintenance; it does not mean the sign is optional because it is temporary.
Core rules
- Orange diamond signs warn of road work, lane shifts, shoulder work, or crews ahead. Orange rectangles may show regulatory messages such as a reduced speed limit.
- A flagger has authority to stop and release traffic. Obey the flagger's signals even if they differ from the sign or signal indication.
- Posted work-zone speed limits are enforceable. In North Carolina, speeding fines are doubled in a work zone when workers are present, so slow down as soon as the reduced limit begins.
- Channeling devices-cones, drums, barricades-mark the travel path. Do not cross them or drive into a closed lane to save time.
- Detour signs use orange arrows and route markers. Follow the detour even if it seems longer; the normal route may be physically closed.
- Watch for workers, equipment, and uneven pavement. Reduce distractions and increase following distance.
Worked example
A 65 mph highway enters a work zone with an orange SPEED LIMIT 45 sign. No workers are visible at the moment. The 45 limit is still a posted regulatory limit and you must obey it. The doubled-fine provision applies when workers are present, but the lower limit applies regardless. Slow before the first cone, stay in the marked lane, and be ready for a sudden stop.
Traps that cost marks
Do not speed up because you see no workers. Do not pass a flagger who is holding a STOP paddle. Do not cross barricades or drive around a road-closed sign. Do not ignore a detour arrow because your GPS shows the direct route. And do not treat an orange warning sign as a mere suggestion-work zones change lane geometry quickly.