2011 ORS § 801.462¹
School zone

(1) School zone means both of the following:

(a) A specific segment of highway that is adjacent to school grounds and that is marked by signs described in subsection (2) of this section.

(b) A crosswalk that is not adjacent to school grounds and that is marked by signs described in subsection (2) of this section.

(2) Signs marking a school zone may include any words, symbols or combination of words and symbols that gives notice of the presence of the school zone. [2003 c.397 §2]