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Railroad Dictionary

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Jackknifing Excessive lateral forces caused by heavy buff loading, resulting in heels lifting over the high rail or the rail rolling over.
Jib (Slang) A derrick or crane. More properly called a boom.
Johnson Bar Reverse lever on a steam locomotive.
Joint A coupling between two cars.
Joint Agency Agency which transacts business for two or more transportation lines.
Joint Agent A person having authority to transact business for two or more railroads.
Joint Bar (AKA Angle Bar) A formed steel bar used in pairs to fasten together the ends of rails in a track.
Joint Rate A rate from a point located on one transportation line to a point on another transportation line which is published in a single tariff.
Joint Tariff A tariff containing joint rates.
Joint Track Track which is used jointly by two or more carriers, but generally owned by one or the other.
Journal The part of a rail axle on which the journal bearing rests or is mounted.
Journal Bearing A combination of rollers and races or a block of metal (usually brass or bronze) in contact with the journal, on which the load rests. In car construction, the term, when unqualified, means a car axle journal bearing. See also Roller Bearing.
Journal Box The metal housing which encloses the journal of a car axle, the journal bearing and wedge, and which holds the oil and lubricating device for lubricating the journal. There are two types of journal boxes presently in existence. The old type is for a car that runs on brass bearings. The box has an open lid and is filled with shredded cloth that has been oiled.
Journal Brass See Journal Bearing.
Julian Date A serial number equal to the number of days elapsed since January 1, often shown on desk top calendars and written as 87 (yr) 141 (date).
Jumper Cable A flexible cable used to electrically connect the controller circuits between locomotives.
Junction Point at which two or more carriers interchange freight.
Junction Box A housing for wires at junction points in wire and cable runs.
Junction Point A point at which a branch line track connects with a main line track. OR A location at which two or more railroads interchange cars over connecting tracks.
Junction Settlement An accounting procedure which allows CSXT to settle the division of freight revenue with various small railroads on a current basis. These small railroads do not have their own accounting departments. CSXT will make interline settlement with other carriers on behalf of these small railroads when necessary.
Junction Settlement Road A short line road for which a junction road settles its revenue or a short line carrier that does not participate as a line haul carrier and settlement of revenue is performed by connecting carriers. Unique audit (station) numbers are assigned to these carriers for rating and settling purposes.
Justify To occupy only the leftmost, center, or rightmost position of a field when there are less characters than the field allows. For example:
Left
Center
Right
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