SIGNAL+DRAHT | Issue 03/2021

Brownfield projects: re-signalling an underground system with Communications-Based Train Control

March 2021 | David Dimmer, Klemens Haimann

Underground networks constitute the backbone of urban transport. The global trend towards increasing investments in rail transport clearly shows the importance of public transport for public life. While new underground systems constitute a large part of the current projects in upcoming mega-cities, older lines form the core network in many cities and they therefore have to be updated in the interim. In many cases, this modernisation is based on Communications-Based Train Control (CBTC) systems whose properties and advantages will be expounded in the following text...