Centralized traffic control networks link field signals and power switches directly to a central dispatching office. The dispatcher views a digital display of track occupancy and lines up routes by clicking a screen, which sends commands to field interlockings. This eliminates the need for physical train orders and local operators, allowing bidirectional running on single-track main lines with high efficiency.
We're operating under centralized traffic control all the way to Chicago, so just follow the signal indications.
Also heard as
- CTC
Related terms
CTC
Centralized traffic control: signals and switches controlled remotely by a dispatcher who routes every train.
Dark territory
A section of main line track that lacks automated block signals.
Track warrant
A written authority from the dispatcher, copied by radio, that lets a train occupy a set stretch of main track.