2007 ORS § 810.020¹
Regulating use of throughway
(1) Each road authority may prohibit or restrict the use of a throughway in its jurisdiction by any of the following:
(b) Bicycles or other nonmotorized traffic.
(c) Motorcycles or mopeds.
(2) Regulation under this section becomes effective when appropriate signs giving notice of the regulation are erected upon a throughway and the approaches to the throughway.
(3) Penalties for violation of restrictions or prohibitions imposed under this section are provided under ORS 811.445 (Use of throughway when prohibited).
(4) The Oregon Transportation Commission shall act as road authority under this section in lieu of the Department of Transportation. [1983 c.338 §146]