RAILROAD GLOSSARY Freight Rail Handbook Line Haul Switching The moving of cars within yard or switching limits or a station preceding or following a line haul. Line of Road Trackage between terminals. Locomotive (AKA Locomotive Consist) A self-propelled unit of equipment, or combination of units operated under a single control, and designed solely for moving other equipment. Low Side Gondola A gondola car with sides and ends 36 inches high or less. Main Line That part of the railway, exclusive of switch tracks, branches, yards, and terminals. Main Track A track extending through yards and between stations. It is other than an auxiliary track. Manifest A description of the contents of a shipment. Maximum Authorized Speed The highest speed permitted for any train on a subdivision or portion of a subdivision. It will be found listed under “Maximum Authorized Speed” in special instructions. Mechanical Inspection Physical inspection of a car performed to determine its condition. Milepost A marker that identifies by number a given track location. It shows the number of miles from one point on the division to another point. Multilevel Car A long flatcar designed with one or more deck levels in addition to the car’s main deck; used to haul new automobiles and trucks. On the Ground Derailed equipment. Open-Top Car Cars having sides and ends but no roof. A term inclusive of gondola, hopper and ballast cars but does not include flat cars. Operating Rules Manual A publication that contains the following books: CSX Safeway Transportation, Operating Rules, Timetables, Hazardous Material Rules, Restricted Equipment Rules, Train Handling Rules, and On-Track Worker Safety Rules. Origin The location at which a shipment begins. PD Car Permanent Dunnage Car A box car equipped with dunnage, or a type of covered hopper where air pressure is used to unload the contents. Pickup A term descriptive of a car or cars added to a train en route between dispatching and receiving yards or cars added at dispatching yard to train operating over two or more divisions on a continuous work order. Piggy Packer Equipment used in the loading of piggyback trailers or containers onto flat cars.