RETB is a cost-effective system for signalling on single track rail networks
With very low track-side infrastructure requirements, RETB Next Generation – Comms Design’s railway signalling solution, has a significantly lower cost per track kilometre than traditional signalling, and a fraction of the cost of many digital train control systems.
Having trains under interlocked operation across the network from a central control centre offers significant improvements in safety and efficiency over physical tokens or timetable working.
RETB has been safely in use since the mid-1980s on the United Kingdom rail network. Comms Design introduced new radio equipment in 2016 which has further improved the reliability and efficiency of the system.
Traditionally, rail routes with long single track sections, light traffic in difficult terrain are signalled using basic or manually intensive systems. For example:
- Track Warrants
- Physical tokens
- Timetable and Train Orders
- Direct Traffic Control
These methods of traffic control rely heavily on human interaction, are prone to error and do not allow the track to be used to its full capacity.
RETB – Safe, economical traffic control, even on rural routes
Comms Design’s RETB Next Generation fills the gap between primitive train control methods and costly, infrastructure-heavy systems:
- Token issue controlled by SIL Level 4 Interlocking
- Modern software-based train radios automatically tune to the strongest channel, maintaining high-quality communication
- VHF radio network covers long routes with only a few base stations
- Low infrastructure requirements, simple to maintain and secure
- Entire route can be safely controlled from a single signalling desk