Section 301.139 - Parking cones for disabled - rulemaking procedure1. The director of the department of revenue shall, upon the request of any person who is issued special license plates or a removable windshield placard pursuant to section 301.142 and who uses a wheelchair or transports a person who uses a wheelchair, allow the person to obtain a parking cone bearing the international symbol of accessibility and the words "wheelchair parking space". Parking cones obtained pursuant to this section shall be predominantly orange, fluorescent red-orange, or fluorescent yellow-orange, not less than eighteen inches in height and shall be made of a material that can be struck without damaging vehicles on impact. Parking cones shall be purchased by any person wishing to use such cone.2. The director of the department of revenue shall promulgate rules and regulations to administer the provisions of this section. No rule or portion of a rule promulgated pursuant to the authority of this section shall become effective unless it has been promulgated pursuant to the provisions of chapter 536.