333.23 WINDSHIELD AND WINDSHIELD WIPER; SIGN OR POSTER THEREON.
   (a)   No person shall drive any motor vehicle on a street or highway, other than a motorcycle or motorized bicycle, that is not equipped with a windshield.
   (b)   (1)   No person shall drive any motor vehicle, other than a bus, with any sign, poster or other nontransparent material upon the front windshield, sidewings, side or rear windows of such vehicle other than a certificate or other paper required to be displayed by law, except that there may be in the lower left-hand or right-hand corner of the windshield a sign, poster or decal not to exceed four inches in height by six inches in width. No sign, poster or decal shall be displayed in the front windshield in such a manner as to conceal the vehicle identification number for the motor vehicle when in accordance with federal law, that number is located inside the vehicle passenger compartment and so placed as to be readable through the vehicle glazing without moving any part of the vehicle.
      (2)   Subsection (b)(1) of this section does not apply to a person who is driving a passenger car with an electronic device, including an antenna, electronic tolling or other transponder, camera, directional navigation device, or other similar electronic device located in the front windshield if the device meets both of the following:
         A.   It does not restrict the vehicle operator’s sight lines to the road and highway signs and signals.
         B.   It does not conceal the vehicle identification number.
      (3)   Subsection (b)(1) of this section does not apply to a person who is driving a commercial car with an electronic device, including an antenna, electronic tolling or other transponder, camera, directional navigation device, or other similar electronic device located in the front windshield if the device meets both of the following:
         A.   It does not restrict the vehicle operator’s sight lines to the road and highway signs and signals.
         B.   It is mounted not more than six inches below the upper edge of the windshield and is outside the area swept by the vehicle’s windshield wipers.
   (c)   The windshield on every motor vehicle shall be equipped with a device for cleaning rain, snow or other moisture from the windshield. The device shall be maintained in good working order and so constructed as to be controlled or operated by the operator of the vehicle.
(ORC 4513.24)