Low Clearance Signs | Clarion Safety Systems

Q: "Does OSHA require low clearance signs?"

"Yes. OSHA 29 CFR 1910.176(e) requires clearance signs to warn of clearance limits in areas where mechanical handling equipment operates."

Q: "What height should be posted on a low clearance sign?"

"Post the actual measured clearance of the opening or obstruction, accounting for hardware and equipment that reduces it. On public roads, posting thresholds and methods follow the MUTCD and state requirements; inside facilities, the measured height governs."

Low Clearance Signs for Doorways, Docks, and Overhead Hazards

Low clearance signs communicate exact overhead heights so drivers and equipment operators can avoid collisions with doorways, piping, ductwork, mezzanines and dock structures. OSHA's materials handling standard, 29 CFR 1910.176(e), states it plainly: clearance signs to warn of clearance limits shall be provided. Clarion Safety's low clearance signs use the latest OSHA/ANSI Z535 formats and accommodate your measured clearance heights, so the number on the sign matches the structure above it.

Where to Post Clearance Signs in Your Facility

Overhead doors and interior doorways along forklift travel paths

Loading docks, canopies and covered staging areas

Piping, conduit, ductwork and sprinkler mains crossing aisles

Mezzanines, conveyors and platform underpasses - see our conveyor safety signs

Post the actual measured clearance, accounting for door hardware and any equipment that reduces the opening. On public roads, low clearance signing follows the FHWA's Manual on Uniform Traffic Control Devices (MUTCD) and state law; inside your facility and on private property, OSHA and your own risk assessment govern. For vehicle traffic beyond overhead hazards, see our parking and traffic signs.

Need clearance signs with your exact measured heights? Clarion's custom sign services can produce them quickly for every opening in your facility.

Frequently Asked Questions About Low Clearance Signs

Does OSHA require low clearance signs?

Yes. OSHA 29 CFR 1910.176(e) requires clearance signs to warn of clearance limits in areas where mechanical handling equipment operates.

What height should be posted on a low clearance sign?

Post the actual measured clearance of the opening or obstruction, accounting for hardware and equipment that reduces it. On public roads, posting thresholds and methods follow the MUTCD and state requirements; inside facilities, the measured height governs.

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