A count of trains being held either for congestion or for maintenance of way curfew. This may occur because of trains that are not running on schedule due to a critical resource, such as power or track congestion. The crews have been removed and power has probably been removed. Number of trains operated through a defined area or terminal during a specified time period. Trains Tied Down Trains holding on line for relief crews, slots and spacing into a terminal.
Power usually is still on the trains.
UDE Undesired emergency, when air pressure contained within the air brake system is released, resulting in the application of train brakes. The toll or fee paid to the owner of the railroad track to pass over their tracks. Windows Same as curfew, but also can mean holding trains for things other than Maintenance of Way curfew, such as operating passenger trains. The grounds next to the railroad building center where trains are made up and or loaded or switched. Z These descriptions or terms on this web page are not intended to be legal definitions.