2013 ORS § 801.560¹
Trailer

Trailer means every vehicle without motive power designed to be drawn by another vehicle. Trailer includes, but is not limited to, the following types of trailers:

(1) Balance trailers.

(2) Bus trailers.

(3) Commercial bus trailers.

(4) Farm trailers.

(5) Pole trailers.

(6) Semitrailers.

(7) Travel trailers.

(8) Truck trailers.

(9) Self-supporting trailers.

(10) Special use trailers. [1983 c.338 §103; 1985 c.16 §28; 2003 c.655 §92]