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Signalling and Telecoms

Signalling the Thameslink Programme

Lying abandoned under London in 1984 was the route between Farringdon and Ludgate Hill, known as the ‘Snow Hill Tunnel’, not to be confused...

Biting the bullet – the Danish ERTMS roll out

Much has been written on the deployment of the European Railway Traffic Management System (ERTMS) Level 2 across Europe. Most of the more recent...

Establishing a trend

Electromagnetic emissions from rolling stock are currently a major concern for train manufacturers and railway infrastructure operators. Rolling stock is required to meet specific...

Connecting the Severn Valley

It is a common belief amongst the heritage railway community that having a main line connection is good for business. This not only facilitates...

Signalling – the next five years

Railway signalling has seen many step changes over the years - from mechanical semaphores to coloured lights, relay interlockings to solid state, hard wired...

Signalling down the mine

The Swedish city of Kiruna, 145 kilometres above the Arctic Circle, is literally on the move. In a few years’ time its centre will...

Invensys signalling and Siemens join together

The recent announcement that Invensys Rail was to merge with Siemens may have caused a few raised eyebrows, but in fact this event had...

Integrating rail traffic controls

Ever since the Midland Railway first introduced an Area Control Office near Sheffield in 1907, the merits of being able to collect operational details...

Temporary signalling

When re-signalling and permanent way works take place at the same time and over successive weekends, it is often necessary to install temporary site...

Evolution of signalling control

Network Rail is currently developing the fourteen Rail Operating Centres (ROCs) which will eventually control the entire national network. Meanwhile, the Hertford National Integration...

Looking backwards and forwards: One hundred years of the IRSE

The Institution of Railway Signal Engineers (IRSE) celebrated its centenary in 2012. Although a body to represent this specialist branch of rail engineering had...

The future of GSM-R and its possible replacement

GSM-R (Global System for Mobile - Railways) is now well established as the radio system of choice for track- to-train voice communication in Europe...

SSS – Sub Surface Signalling

London Underground is 150 years old this year. The first train on the Metropolitan Railway ran between Paddington and Farringdon on 9 January 1863. Today,...

Resignalling the Victoria Line

Much has been written about the excellent way in which public transport performed during the 2012 London Olympic Games. This was due to detailed...

Seltrac goes Evergreen

The SkyTrain light rapid transit system in Vancouver, Canada, comprises 68.7km (42.7 miles) of track and 47 stations over three lines. The first of...

Why is innovation so difficult in railways?

Railways, and signalling in particular, are generally not well regarded for being innovative. Talented job applicants with a high-tech background, such as software engineering,...