ORS 815.182: Kinds of fenders or mudguards required for specified vehicles; placement.

(1) The following types of vehicles must be equipped with the proper type of fenders or mudguards as described in ORS 815.180 (2):

      (a) Type I fenders or mudguards shall be within five feet of the tire tread of the tires on the last axle of:

      (A) Every motor truck equipped with a body that has a registration weight of 8,000 pounds or more.

      (B) Every trailer except one otherwise described in this subsection.

      (C) Every commercial bus.

      (b) Type II fenders or mudguards shall be within four feet of the tire tread of the tires on the last axle of:

      (A) Every motor truck with a registration weight of 8,000 pounds or more that is not equipped with a body.

      (B) A pole trailer.

      (C) A jeep used in the movement of nondivisible heavy haul loads.

      (D) A booster.

      (E) A lowboy.

      (F) A container chassis. For purposes of this subparagraph, a container chassis is a frame with wheels, attached to a tractor, that is used to transport containers to and from ports, rail hubs and customer locations.

      (c) Type III fenders or mudguards shall be on each axle of every motor vehicle not otherwise described in this section.

      (2) For purposes of this section, a truck tractor and a semitrailer coupled together shall be considered one vehicle.