ORS § 824.106
A caboose shall not be placed in service unless it is in compliance with all of the provisions of ORS 824.102 to 824.110 relating to required equipment and standards of maintenance. In the event a failure of required equipment or standards of maintenance occurs after a caboose has departed from a terminal and a member of the train crew has boarded the caboose, the railroad operating the caboose shall not be deemed to be in violation of ORS 824.102 to 824.110 if such failure of equipment or standard of maintenance is corrected at the first point at which maintenance supplies are available or, in the case of repairs, the first point at which repair facilities are available and repairs can reasonably be made or the defective equipment replaced.
ORS 824.106