There shall be placed at each station a signboard on which shall be displayed the number of the level and the method for calling the shaft conveyance.
Cal. Code Regs. Tit. 8, § 7142
There shall be placed at each station a signboard on which shall be displayed the number of the level and the method for calling the shaft conveyance.
Cal. Code Regs. Tit. 8, § 7142