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Subchapter 7. General Industry Safety Orders
Group 13. Cranes and Other Hoisting Equipment
Article 92. Cranes (Except Boom-Type Mobile Cranes)

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§4906. Truck Wheel Guards and Railsweeps.

(a) Bridge truck wheels, except on underhung cranes, or those isolated by location, shall be equipped with wheel guards. They shall also be equipped with railsweeps which extend below the top of the rail and project in front of the truck wheels.

(b) Gantry, tower, hammerhead, or portal crane trucks and wheels shall be equipped with wheel guards or be otherwise similarly guarded at both ends of each truck to prevent a person being crushed beneath the wheels. The clearance between the guard and the rail or running surface shall be such as will afford maximum protection against crushing injuries. Wherever practicable, one half of an inch clearance shall be maintained.

(c) Container-handling, rubber-tired, gantry cranes shall be guarded with wheel fenders, bumpers or skirt guards which shield each wheel to the front and rear extended to the lowest practicable level above ground.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. New subsection (c) filed 8-29-86; effective thirtieth day thereafter (Register 86, No. 39).

2. Amendment of subsection (c) filed 6-1-95; operative 7-3-95 (Register 95, No. 22).

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