What is Centralized Traffic Control (CTC)?

Centralized Traffic Control (CTC) is designed to enhance the safety and efficiency of train operations by regulating movements through signaling. It employs a block system that utilizes signal indications to communicate with train crews regarding track conditions and train movements. This system allows dispatchers to monitor and control train movements from a centralized location, providing real-time updates and ensuring safe spacing between trains.

The use of signal indications is a fundamental characteristic of CTC, as these signals convey important information about track occupancy and operational restrictions, thereby guiding train movements based on established protocols. This leads to improved traffic management, reduced risk of collisions, and the ability to accommodate higher train frequencies on shared tracks.

In contrast to the other options, which do not accurately represent CTC, the correct answer reflects its operational framework and significance in modern rail systems, particularly in enhancing safety through systematic control and communication.