Oregon Revised Statutes Oregon Vehicle Code § 824.230

(1) In any case where the tracks of two or more railroads cross each other at a common grade in this state, the railroads, when ordered by the Department of Transportation, shall protect such crossings by interlocking or other safety devices, under regulations to be designated by the department, to prevent trains colliding at such crossings. An order may be issued under this section only after notice to the affected railroads and a proceeding under ORS chapter 183 initiated by the department on its own motion or upon application by one of the railroads.

(2) The department in making such order shall designate the manner of such interlocking protection, and shall apportion the cost of installing and maintaining the same between the several railroads, if such railroads are unable to agree upon the same between themselves.