Or. Rev. Stat. § 814.500 – Rights and duties of person riding motorized wheelchair on bicycle lane or path

Every person riding a motorized wheelchair on a bicycle lane or path is subject to the provisions applicable to and has the same rights and duties as the driver of a bicycle when operating on a bicycle lane or path, except:

(1) When those provisions which by their very nature can have no application.
(2) When otherwise specifically provided under the vehicle code.

[1991 c.417 §3]