Work Zones and Temporary Traffic Control
What this domain tests
Work-zone signs and devices temporarily change the normal rules. The exam tests orange signs, flagger signals, barricades, channelizing devices, and temporary lane shifts. The key idea is that temporary controls have the same legal force as permanent ones.
Core rules
- Orange signs warn of road work, lane closures, detours, and flaggers. A Road Work Ahead sign means expect workers, equipment, and changing conditions.
- Flaggers direct traffic with a STOP/SLOW paddle or hand signals. Follow the flagger's direction even if it conflicts with a signal or sign; flagger control is temporary authority.
- Barricades close or limit a roadway. Type I and II barricades commonly channel traffic; a Type III barricade with three rails is a strong closure device. Do not drive around a barricade unless directed.
- Channelizing devices such as cones, drums, and temporary markings guide traffic through or around the work area.
- Work-zone speed limits are enforceable when posted. Ohio law also imposes enhanced penalties for certain work-zone violations.
Worked example
You see Road Work Ahead, then Flagger Ahead, then a flagger displaying SLOW. The correct response is to reduce speed and proceed cautiously through the controlled area, not to stop unless the flagger or traffic requires it. If the paddle changes to STOP, stop at the flagger's position or the marked line and wait for release.
Traps that cost marks
- Following the vehicle ahead through a flagger's STOP.
- Driving around a barricade or cone line to save time.
- Ignoring temporary lane markings because old markings are visible.
- Treating an orange sign as merely informational rather than a warning of changed conditions.