18. The windshield of a motorized mobility aid must be(1) transparent and manufactured or treated as to substantially reduce friability and the likelihood of shattering; and
(2) free of any material that might reduce visibility for the user.
It must not(1) have sharp edges or be incorrectly fixed; or
(2) be tarnished, cloudy or broken in a way that reduces the user’s vision of the road or road signs.