§ 174.85 Position in train of placarded cars, transport vehicles, freight containers, and bulk packagings.

(a) Except as provided in paragraphs (b) and (c) of this section, the position in a train of each loaded placarded car, transport vehicle, freight container, and bulk packaging must conform to the provisions of this section. (b) A car placarded “RADIOACTIVE” must comply with train positioning requirements of paragraph (d) of this section and must be separated from a locomotive, occupied caboose, or carload of undeveloped film by at least one non-placarded car. (c) A tank car containing the residue of a hazardous material must be separated from a locomotive or occupied caboose by at least one rail car other than a placarded tank car. (d) Position of rail cars in a train. In the following table: Position in Train of Placarded Cars Transporting Hazardous Materials (1) Where an “X” appears at the intersection of a Placard Group column and a Restriction row, the corresponding restriction applies. (2) “Rail Car” means a car other than a tank car. (3) For purposes of this subpart, each unit of an articulated intermodal rail car shall be considered as one car.