A curved track connection that links two intersecting main lines, allowing trains to transfer from one route to the other without reversing direction. They are often built at junctions where lines cross at different grades, forming a wye or a sweeping curve to maintain route fluidity.
Heard on the job
The dispatcher is routing the detour train down the northeast chord to get them back on the main.
Insider tip
Chords are essential for detour routings when a main line is blocked, allowing dispatchers to bypass the obstruction without complicated switching moves.