Work Zone Safety, Construction Coordination, and Records
Temporary traffic control
The exam tests MUTCD Part 6 work-zone layout and inspection, plus coordination and records. A TTC zone has advance warning, transition, activity, and termination areas. Verify sign spacing, taper length, channelizer spacing, flagger stations, lighting, and pedestrian access. Use positive protection where required and inspect the zone daily as conditions change.
Coordination and records
- Preconstruction: approved MOT plan, utility locates, agency notifications, and contractor submittals.
- Field coordination: RFIs, change orders, traffic shifts, and public notice.
- Records: daily reports, photos, test results, as-builts, punch list, substantial completion, warranties, and O&M manuals.
- Safety: PPE, high-visibility clothing, lockout/tagout, and never turning your back on traffic.
Worked example
A lane closure on a 45-mph road uses a 12-ft lane. The plan shows a 200-ft taper. For 45 mph or higher, the MUTCD taper formula is L = W × S² / 60, so L = 12 × 45² / 60 = 405 ft. The 200-ft taper is too short; require relocation of the first cone or a longer closure. Document the measurement and the corrected layout.
Traps
Using posted speed when operating speed is higher; leaving advance signs after the work moves; blocking pedestrian access without a detour; recording verbal approval without photos; and missing utility locate records before excavation.