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Subchapter 7. General Industry Safety Orders
Group 13. Cranes and Other Hoisting Equipment
Article 93. Boom--Type Mobile Cranes

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§4921. Operating Controls.

(a) Lever-operated controllers shall be provided with a device which will hold the handle in the "off" position, requiring voluntary effort to remove it from the "off" to the "on" position.

(b) The operating controls shall be located within convenient reach of the operator and shall be identified by marking or a legible chart to indicate the motion controlled and the direction.

(c) Controls shall include means:

(1) To start and stop;

(2) To control speed of internal combustion engines;

(3) To stop engines under emergency conditions;

(4) For shifting selective transmission.

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


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

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