Connection schema
![Connection schema Connection schema.](/sites/default/files/generated/image/paragraph/Plan%20de%20travail%201%20copie%202%403x-100_0.jpg)
The following diagram shows the different possible configurations of a connection:
![different possible configurations of a connection.](/sites/default/files/generated/image/paragraph/sch%C3%A9ma%20raccordement%20ANG.jpg)
Main line: line used by passenger and freight trains running at a speed generally higher than 40 km/h
Local line: line used by trains running at a speed no higher than 40 km/h
Yard: set of sidings in a station, with a common destination (yard tracks, shunting...), and designated under the same generic name
Out of service or out of operation: Infrabel lines that are no longer open to commercial traffic