Train path
Encyclopedia
A train path is the infrastructure capacity needed to run a train between two places over a given time-period. In Europe, a train operator needs to purchase a train path from a rail infrastructure company to run a train
on their tracks.
The number of rail paths available on a given railway line is dependent on a number of factors. The number of tracks and the type of signalling
, specifically the number of blocks, are limits set by the actual infrastructure. A variable factor is the speed difference between trains. Optimal capacity is achieved when all trains run at the same constant speed. Otherwise faster trains will eventually catch up to slower trains, so trains have to be spaced further apart to minimize interference.
Usually, train operators apply for train paths over a given period several months before the start of the period. After a deadline has passed, the rail infrastructure company uses all applications to create the working timetable. A number of rail infrastructure companies have defined different classes of train paths. More expensive classes are treated with priority during timetable construction and operation.
If a train's delay exceeds a certain tolerance, it may "fall out" of its train path. On congested lines, this may result in additional delays, as such a train is taken to passing sidings
whenever necessary to let other trains pass.
Train
A train is a connected series of vehicles for rail transport that move along a track to transport cargo or passengers from one place to another place. The track usually consists of two rails, but might also be a monorail or maglev guideway.Propulsion for the train is provided by a separate...
on their tracks.
The number of rail paths available on a given railway line is dependent on a number of factors. The number of tracks and the type of signalling
Railway signalling
Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being guided by fixed rails, trains are uniquely susceptible to collision; furthermore, trains cannot stop quickly, and frequently operate at speeds that do not enable them to stop...
, specifically the number of blocks, are limits set by the actual infrastructure. A variable factor is the speed difference between trains. Optimal capacity is achieved when all trains run at the same constant speed. Otherwise faster trains will eventually catch up to slower trains, so trains have to be spaced further apart to minimize interference.
Usually, train operators apply for train paths over a given period several months before the start of the period. After a deadline has passed, the rail infrastructure company uses all applications to create the working timetable. A number of rail infrastructure companies have defined different classes of train paths. More expensive classes are treated with priority during timetable construction and operation.
If a train's delay exceeds a certain tolerance, it may "fall out" of its train path. On congested lines, this may result in additional delays, as such a train is taken to passing sidings
Rail siding
A siding, in rail terminology, is a low-speed track section distinct from a running line or through route such as a main line or branch line or spur. It may connect to through track or to other sidings at either end...
whenever necessary to let other trains pass.