It is a system of railway block signalling designed for single track rail routes with light to medium traffic density. It is a development of the physical token system, but uses a radio network to issue an electronic token directly to the driver.
When a train is required to move into a new section, the signaller issues a movement authority permission token for that section to the train. In order to receive the token, the driver activates the ‘receive’ function on the in-cab equipment. This starts a radio transmission that is coded to match the identification number of that train. Together these safeguards guarantee that the train receives the correct token.
The token gives the driver permission to proceed into the track block, deactivating the automatic train protection for that section. A SIL level 4 interlocking system controls the issue of all movement tokens, protecting the single track sections.
Comms Design’s Digital In-Cab Signalling solution comes with its own radio network. The radio base stations form a self-contained chain of coverage cells with a ‘virtual backhaul’ between them with no need for other supporting radio links, e.g. microwave.
Radio calls from trains are transmitted from base station to base station and back to the signalling centre. Train radios automatically tune to the strongest radio channel as they move along the route. All users hear all calls, enhancing situational awareness and safety.
The modular radio system can be installed onto existing radio masts, further decreasing the cost of entry for our digital in-cab signalling system.
Comms Design is at the forefront of advancing the future of secure single-track digital in-cab railway signaling by integrating cutting-edge communication and positioning technologies into the Advanced RETB (A-RETB) system.
This enhanced system streamlines operations by reducing the workload for both train drivers and signalers, thereby unlocking the full potential of remote routes. A-RETB boasts a cost-effective and adaptable installation process, making it a rapid solution to enhance the safety, performance, and efficiency of your rail network.
A-RETB is the optimal choice for implementing secure digital signaling and train control on rural, single-track, passenger, freight, industrial routes, or any areas where traditional signaling systems are impractical or economically unviable.
A-RETB supersedes antiquated voice authority, physical token, and card-based working systems with state-of-the-art command and control functionalities. Through resilient communication and positioning systems, A-RETB offers comprehensive train integrity monitoring, providing protection against collisions, over-speed incidents, and track authority violations.
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We take our responsibilities to Data Protection seriously. We’re very pleased that you have made an enquiry with us today. We will use your data to process your enquiry.
Read our privacy policy to find out more.
