Six railroad terms complete this series:

Undergrade Bridge
Any point where the trackage crosses above any stream, railroad, road, or pedestrian right of way. Abbreviated as UG.

Undesired Emergency (Also known as “Dynamiter” or “Kicker”.)
An undesired emergency application of the air brake system on a train.

Waybill
A document for handling and accounting for a shipment of freight.

Way Car
A box car from which LCL (Less than carload lot) shipments are loaded and unloaded at various towns.

Yard
A system of tracks used for the making up of trains and the storing of cars.

Yard Limits
The trackage between Yard Limit signs as designated in the Timetable. Restricted Speeds apply within Yard Limits.