Maintenance, Safeguards, and Operational Features for Exit Routes.

Lighting and marking must be adequate and appropriate. [1910.37(b)]

Required exit routes must be free and unobstructed [1910.37(a)(3)]

Required exit sign must have plainly legible letters not less than six inches (15.2 cm) high, with the principal strokes of the letters in the word less than three-fourths of an inch (1.9) cm) wide [1910.37(b)(7)]

1910.37(b)(2) Each exit must be clearly visible and marked by a sign reading "Exit."