109. Warning devices: When ladles containing molten metal are transported by power trucks, monorails, gantry cranes or overhead cranes, these apparatus shall be provided with warning devices (bells, whistles or sirens) which shall be sounded while traveling. For each type of lifting apparatus used for the transport of molten metal, a different warning device shall be utilized.
R.R.Q., 1981, c. S-2.1, r. 20, s. 109.