There shall be no less than two exits on each floor of each facility, as remote as practicable from one another, to minimize the possibility that both may be blocked at the same time by fire or other emergency, and to which, upon release in emergency situations, inmates may have access by open, unobstructed, safe, and continuous passageways or corridors leading directly to such exits. Travel distance between any point on the floor of the facility and an exit shall not exceed 150 feet. Travel distance between any point on the floor and an exit may be increased by 50 feet in fully sprinklered facilities not to exceed 200 feet of total travel distance. Existing facilities having a capacity of 45 inmates or less may operate with a single exit with the approval of the commission. Elevators shall not be considered or relied upon as exits.