(b) Number plates shall be kept clean and in a condition so as to be easily readable and shall not be covered by glass or any plastic material, and shall not be knowingly covered or coated with any artificial or synthetic material or substance that conceals or obscures such number plates or that distorts a recorded or photographic image of such number plates, and the view of such number plates shall not be obstructed by any part of the vehicle or by anything carried thereon, except for a receiver-transmitter issued by a publicly owned tolling facility in connection with electronic toll collection when such receiver-transmitter is affixed to the exterior of a vehicle in accordance with mounting instructions provided by the tolling facility. 2. Such number plates shall be of such material, form, design and dimensions and contain or set forth such distinguishing number or other identification marks as the commissioner shall prescribe, provided, however, that there shall be at all times a marked contrast between the color of the number plates and that of the numerals or letters thereon, and provided further that no vehicle shall display the number plates of more than one state at a time except where the vehicle is required to be registered in more than one state, and provided further that the number plates of a rental vehicle shall not display any indication of the rental status of such vehicle nor shall any plate be used other than those issued by the commissioner. 3. No person shall operate or drive a motor vehicle drawing a trailer on the public highways of the state, unless such trailer shall have a distinctive number assigned to it by the commissioner and a number plate issued by such commissioner with a number corresponding to that of the certificate of registration displayed and fastened on the rear in the manner provided for number plates on the rear of a motor vehicle. The provisions of subdivision two of this section relating to number plates for motor vehicles shall apply to number plates for any such trailer. The provisions of this subdivision shall not apply when a newly constructed trailer is being drawn to or from a weighing station solely for the purpose of determining the weight thereof. 4. No person shall operate or drive a motor vehicle upon the public highways of this state having displayed thereon number plates not proper for such vehicle under the provisions of this chapter and, upon a conviction for this offense, the number plates shall be surrendered to the court for delivery to the commissioner. The failure to produce the certificate of registration or registration renewal stub of a vehicle shall be presumptive evidence of displaying number plates not proper for the vehicle. Every annual number plate issued shall remain the property of the state until the correct registration fee is paid. Every number plate of a permanent nature for use with a removable date tag which shall be issued shall remain the property of the state unless and until the commissioner finds that the state no longer has use for it. Number plates belonging to the state shall be under the control of the commissioner. 5. No person shall knowingly authorize or permit a number plate issued for a motor vehicle or trailer owned and registered by him to be displayed on any motor vehicle or trailer other than a motor vehicle or trailer to which such number plate has been assigned by the commissioner, or upon which such number plate may legally be displayed under a temporary certificate of registration issued by a dealer under the provisions of section four hundred twenty of this chapter. 6. No owner shall knowingly cause or permit a vehicle owned by him to be operated, driven or parked upon the public highways of this state in violation of this section. Any violation of this section that occurs while a motor vehicle is parked on the public highways of this state shall constitute a parking violation. 7. It shall be unlawful for any person, firm, partnership, association, limited liability company or corporation to sell, offer for sale or distribute any artificial or synthetic material or substance for the purpose of application to a number plate that will, upon application to a number plate, distort a recorded or photographic image of such number plate. 8. The violation of this section shall be punishable by a fine of not less than twenty-five nor more than two hundred dollars.