After several decades of the promotion of road transport, we have realised that the provision of more roads will not on its own solve our traffic problems. More

For over 150 years Britain's railways have relied on a system of semaphore signalling, but by 2020, all semaphore signals and lineside signal boxes will be gone

Excerpt from Railway Signal Engineering (Mechanical) The signalling of railways has developed rapidly, more especially during comparatively recent years, until