Safe Setup of Mobile Signage

Key Hazards

• Workers struck while placing or adjusting signs
• Signs placed where drivers cannot see them in time
• Mobile signs tipping, rolling, or shifting
• Backing incidents during sign placement
• Poor visibility from weather, darkness, curves, or hills
• Electrical or battery hazards from powered message boards

2–3 Minute Talk Script

Mobile signage helps warn drivers and guide traffic, but setting it up can expose workers to moving vehicles and equipment. The setup process should be planned before workers enter traffic areas.

The sign location should give drivers enough time to see, understand, and respond to the message. Curves, hills, intersections, parked vehicles, trees, glare, and weather can reduce visibility.

Workers should use appropriate traffic control, high-visibility clothing, and vehicle positioning during setup. The sign should not be placed in a way that creates confusion or blocks travel paths.

Mobile signs, trailers, and message boards should be stabilized according to manufacturer instructions. Brakes, jacks, outriggers, wheels, and hitch connections should be secured so the unit cannot roll or tip.

Backing and positioning sign trailers requires caution. Spotters, mirrors, cameras, and clear communication should be used when visibility is limited.

Powered signs may involve batteries, solar panels, cords, generators, or electrical components. Workers should inspect power systems and avoid damaged wiring or unsafe connections.

Sign messages should be clear, accurate, and appropriate for the work zone. Confusing, outdated, or incorrect messages can create hazards for drivers and workers.

Safe mobile signage setup depends on visibility and stability. Place signs where drivers can react, protect workers during setup, secure the sign unit, and reassess the location as conditions change.

Safety Reminders

• Plan the sign location before setup.
• Wear high-visibility clothing when exposed to traffic.
• Place signs where drivers can see them early.
• Stabilize trailers, wheels, jacks, and supports.
• Use spotters when backing or positioning sign units.
• Inspect batteries, wiring, cords, and power systems.
• Update or remove signs when messages are no longer accurate.

Ask the Crew

• Can drivers see and understand the sign early enough?
• How will workers be protected during setup?
• Is the sign or trailer secured from movement or tipping?
• Is backing required, and how will it be controlled?
• Is the message accurate for the current work condition?