1. Designated disabled parking spaces may only be used when a disabled person, who has been issued disabled license plates or windshield hanging placards pursuant to the provisions of section 301.142 or by those states with which the director has entered into reciprocity agreements as provided in section 301.142, is then, or immediately preceding being parked, was an occupant of the motor vehicle bearing the disabled license plate or windshield hanging placard or in cases where the motor vehicle bearing the disabled license plate or windshield hanging placard is then being used to deliver or collect one or more of the disabled persons for whom the disabled license plate or windshield hanging placard was issued.

2. The driver, or any occupant, of a motor vehicle bearing disabled license plates or a windshield hanging placard which is parked or has been observed to have been parking in a duly designated disabled parking space shall, upon request from any law enforcement officer or other duly constituted peace officer upon identification as such, produce the disabled registration certificate issued to the disabled person or entity as provided for in section 301.142 or such other authorization to show that the driver or any occupant of the vehicle is lawfully entitled to use a designated disabled parking space. The driver or any occupant of the motor vehicle shall, in addition to the certificate, produce other identification with a photograph of the disabled person for whom the disabled plates or windshield hanging placard was issued.

3. If the driver, or an occupant, of a motor vehicle which is parked or has been observed to have parked in a designated disabled parking space is unable to, or cannot, produce the certificate as provided for in section 301.142 or other proper authorization showing that the vehicle is being used, or has been lawfully parking in a disabled parking space, the operator is guilty of a class A misdemeanor. However, no person shall be found guilty of violating this section if the operator produces such a certificate to the court that was valid at the time of the citation for a person who was using the vehicle.

4. The windshield hanging placard shall only be used when the vehicle is parked in a disabled parking space. It shall be unlawful for any person to operate or drive a motor vehicle with a windshield hanging placard hanging from the inside rearview mirror.