Or. Rev. Stat. § 816.320
This section establishes requirements for ORS 816.330. Where specific types of lighting equipment are mentioned by this section, those types are types described under ORS 816.040 to 816.290. Except where an exemption under ORS 816.340 specifically provides otherwise, a vehicle that does not comply with this section is in violation of ORS 816.330:
(1) A motor vehicle shall be equipped with all of the following in addition to any other requirements under this section:
(2) All trailers shall be equipped with all of the following in addition to any other requirements under this section:
(3) The motor vehicles described in this subsection shall be equipped with forward and rearward side reflectors on each side of the vehicle and forward and rearward side marker lights on each side of the vehicle in addition to any requirements under subsection (1) of this section. This subsection applies to the following vehicles:
(4) In addition to any other requirements under this section, any motor truck with a registration weight in excess of 8,000 pounds, commercial bus or trailer that is 80 inches or more in overall width and less than 30 feet in overall length shall be equipped with the following:
(5) In addition to any other requirements under this section, any motor truck with a registration weight of more than 8,000 pounds, commercial bus or trailer that is more than 30 feet in overall length, regardless of its width shall be equipped with the following:
[1983 c.338 §461; 1985 c.71 §5; 1989 c.402 §11; 1989 c.992 §22; 2015 c.283 §8]