A railway route constructed with multiple parallel tracks to handle high volumes of simultaneous traffic in both directions. This configuration requires complex interlocking plants, crossovers, and signals to route trains efficiently. It allows dispatchers to run faster passenger trains around slower freight drags without forcing anyone into a siding.
Heard on the job
Dispatch is routing us down the multitrack main so the intermodal can overtake us on the inside.
Related terms
Double track
A railway line built with two parallel sets of tracks to allow simultaneous traffic in opposite directions.
Main line
The principal track or tracks of a railroad between terminals, where trains need authority to run.
Interlocking
An arrangement of signals and switches interconnected to prevent conflicting train movements.