(1) With respect to intrastate transportation by motor carriers, the Department of Transportation may adopt and enforce rules, and issue and enforce orders, related to:
(a) Uniform cargo liability, uniform bills of lading or receipts and uniform cargo credit; and
(b) Joint line rates, and routes, classifications and mileage guides for the purpose of providing antitrust immunity.
(2) Rules and orders adopted and issued under subsection (1) of this section are mandatory only in respect to transportation described in ORS 825.202.