Oregon Revised Statutes Oregon Vehicle Code § 824.306

(1) No person owning, controlling or operating any line of railroad in this state shall build, construct, reconstruct or repair railroad car equipment or motive power in the state without first erecting and maintaining at every division terminal, or other point where five employees or more are regularly employed on such work, a shed over a sufficient portion of the tracks used for such work, so as to provide that all employees regularly employed in such work are sheltered and protected from rain and other inclement weather.

(2) This section does not apply at points where fewer than five employees are regularly employed in such work, nor at points where it is necessary to make light repairs only on equipment or motive power, nor to equipment loaded with time or perishable freight, nor to equipment when trains are being held for the movement of equipment. As used in this subsection, “light repairs” does not include repairs usually made in roundhouse, shop or shed upon well-equipped railroads.