Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 7 - ELEVATORS, LIFTS, ESCALATORS, DUMBWAITERS, HOISTS ANDTRAMWAYS
Subchapter H - STAIRWAY INCLINED LIFTS IN BUILDINGS OTHER THAN PRIVATE RESIDENCES
Section 7.256 - Operating device

Operating shall be by continuous-pressure, key-operated switches, at the terminal landings only. Switches shall be so arranged that they do not remain in the "run" position unless forcibly held in such position, and automatically return to the "off" position and the key ejected from the switch if released. Keys shall be placed only in the hands of designated responsible persons and not be indiscriminately distributed, so that operation of the device may be closely supervised by a competent person at a terminal landing only. Key switches shall be so located as to permit an unobstructed view of the entire length of travel of the lift.