(a) All vehicles, other than bicycles, including animal-drawn vehicles, implements of husbandry, road machinery, road rollers and agricultural tractors, not specifically required to be equipped with lamps or other lighting devices by Sections 438.02 through 438.09, shall, at the times specified in Section 438.02, be equipped with at least one lamp displaying a white light visible from a distance of not less than 1,000 feet to the front of the vehicle, and also shall be equipped with two lamps displaying a red light visible from a distance of not less than 1,000 feet to the rear of the vehicle, or as an alternative, one lamp displaying a red light visible from a distance of not less than 1,000 feet to the rear and two red reflectors visible from all distances of 600 feet to 100 feet to the rear when illuminated by the lawful lower beams of headlamps.
Lamps and reflectors required or authorized by this section shall meet standards adopted by the Ohio Director of Public Safety.
(b) All boat trailers, farm machinery and other machinery, including all road construction machinery, upon a street or highway, except when being used in actual construction and maintenance work in an area guarded by a flagperson, or where flares are used, or when operating or traveling within the limits of a construction area designated by the Ohio Director of Transportation, the Municipal or County Engineer, when such construction area is marked in accordance with requirements of the Ohio Director of Transportation and the Manual of Uniform Traffic Control Devices, as set forth in Ohio R.C. 4511.09, which is designed for operation at a speed of twenty-five miles per hour or less, shall be operated at a speed not exceeding twenty-five miles per hour, and shall display a triangular slow-moving vehicle emblem (SMV). Such emblem shall be mounted so as to be visible from a distance of not less than 500 feet to the rear. The Ohio Director of Public Safety shall adopt standards and specifications for the design and position of mounting the SMV emblem. The standards and specifications for SMV emblems referred to in this section shall correlate with and, so far as possible, conform with those approved by the American Society of Agricultural Engineers. As used in this subsection, “machinery” does not include any vehicle designed to be drawn by an animal.
(c) The use of the SMV emblem shall be restricted to animal-drawn vehicles, and to the slow-moving vehicles specified in subsection (b) hereof operating or traveling within the limits of the highway. Its use on slow-moving vehicles being transported upon other types of vehicles or on any other type of vehicle or stationary object on the highway is prohibited.
(d) No person shall sell, lease, rent or operate any boat trailer, farm machinery or other machinery defined as a slow-moving vehicle in subsection (b) hereof, except those units designed to be completely mounted on a primary power unit, which is manufactured or assembled on or after April 1, 1966, unless the vehicle is equipped with a slow-moving vehicle emblem mounting device as specified in subsection (b) hereof.
(e) Any boat trailer, farm machinery or other machinery defined as a slow-moving vehicle in subsection (b) hereof, in addition to the use of the slow-moving vehicle emblem, may be equipped with a red flashing light that shall be visible from a distance of not less than 1,000 feet to the rear at all times specified in Section 438.02. When a doublefaced light is used, it shall display amber light to the front and red light to the rear.
In addition to the lights described in this subsection, farm machinery and motor vehicles escorting farm machinery may display a flashing, oscillating or rotating amber light, as permitted by Section 438.16, and also may display simultaneously flashing turn signals or warning lights, as permitted by that section.
(f) Every animal-drawn vehicle upon a street or highway shall at all times be equipped in one of the following ways:
(1) With a slow-moving vehicle emblem complying with subsection (b) hereof;
(2) With alternate reflective material complying with rules adopted under Ohio R.C. 4513.11(F);
(3) With both a slow-moving vehicle emblem and alternate reflective material as specified in Ohio R.C. 4513.11(F).
(g) As used in this section, “boat trailer” means any vehicle designed and used exclusively to transport a boat between a place of storage and a marina, or in and around a marina, when drawn or towed on a street or highway for a distance of no more than ten miles and at a speed of twenty-five miles per hour or less.
(ORC 4513.11)