§ 33.293. Signals.
(a) Signals to indicate the movements of all equipment in or in the vicinity of excavations shall be provided and used and workmen shall be properly instructed in the meaning of these signals.
(b) A flagman or watchman shall be designated to warn the public of the approach of trucks and to direct the trucks in and out of the property. Danger or warning signs shall be posted at all truck entrances and exits.
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