55 Pa. Code § 2390.72 – Passageways and work aisles.

(a) Passageways and work aisles shall be unobstructed at all times.
(b) Work aisles shall be at least 36 inches wide.
(c) Work aisles shall be marked with visible lines that are at least 2 inches wide. If visually handicapped clients are served, work aisles shall be marked with tactile guides.

Source

The provisions of this § 2390.72 adopted May 9, 1980, effective May 10, 1980, 10 Pa.B. 1897; amended May 9, 1986, effective August 8, 1986, 16 Pa.B. 1693. Immediately preceding text appears at serial page (86936).