92 Ill. Adm. Code 442.235
Floor Covering
Section 442
Section 442.235 Floor
Covering
a) Plywood or equivalent material may be applied over the
existing steel floor and securely fastened – shall be applied if specified by
the purchaser. If applied, plywood shall be at least ½" exterior BB grade.
b) All portions of the floor that come in contact with
passengers' or driver's footwear shall be covered with a waterproof material.
This floor covering shall not crack when subjected to sudden temperature change
and shall be bonded securely to the floor with a waterproof substance. All
seams and openings shall be filled with a waterproof sealer.
c) The floor covering in the aisles and entrance area shall be of
non-skid, wear-resistance type material commonly used in commercial passenger
transportation vehicles.