In service
In service, when used in connection with a railroad freight car, means each railroad freight car subject to this part unless the car:
(1) Has a “bad order” or “home shop for repairs” tag or card containing the prescribed information attached to each side of the car and is being handled in accordance with § 215.9;
(2) Is in a repair shop or on a repair track;
(3) Is on a storage track and is empty; or
(4) Has been delivered in interchange but has not been accepted by the receiving carrier.