Signalling and Communication
Railway Signalling System is a computerised interlocking system that ensures the efficient flow of railway traffic without compromising the safety of the users. It also links up all statistics and services for communication, control and monitoring requirements.
Three (3) components of railway signalling:
1) Block System
Along the railway route, the system would only allow one train to occupy a specific section of track at one time. A block system will use the train detection system (track circuit or axle counter system) to automatically detect trains in blocks and control the signals for each block.
2) Automatic Train Control System
Manual operation of trains can cause errors that lead to serious accidents. The Train Control System is a mechanism that alerts the train driver to drive at a certain speed or stop the train at a certain track section. If the train driver fails to comply with the speed requirement, the Train Control System will either reduce the train speed or stop the train automatically.
3) Train Traffic Control System
With the overwhelming volume of train traffic, a modernized train traffic control system is necessary for the operator to easily monitor and control train movement.