Oregon Revised Statutes Oregon Vehicle Code § 822.220

(1) The operator of a wrecker or tow vehicle may stop the wrecker or tow vehicle where it obstructs traffic when the operator:

(2) A person commits the offense of failure to take precautions when obstructing traffic with a tow vehicle or wrecker if the person is operating a wrecker or tow vehicle engaged in the salvaging of another vehicle and the operator does not do all of the following:

(3) The offense described in this section, failure to take precautions when obstructing traffic with a tow vehicle or wrecker, is a Class D traffic violation.