The identification card for persons with disabilities shall bear the word "SEATING" with a box or blank space adjacent thereto. The issuer of the card shall place an "X" in such box or blank space if the applicant's disability creates mobility or health limitations which prevent him or her from climbing stairs or steep inclines. When so marked, the identification card for persons with disabilities shall be sufficient to admit the holder to seating for persons with disabilities at public events in this state.