If you have ever travelled on the national UK railway system since April 2000 then chances are your train has been over a Train Protection and Warning System (TPWS) loop. These loops, or grids as they appear to be, have been installed on the track and are connected to the signals. They provide an additional level of train safety.
This 54 page book details what TPWS is and how it all works; from the trackside infrastructure, to the rolling stock and the signal boxes. Illustrated with over 30 colour pictures, as well as diagrams to help explain it all, the book takes you on a journey from early railway signalling, to the development of the Automatic Warning System (AWS) and onto TPWS. A must for the causal observer, enthusiast or rail professional.
Third Edition Paperback. Updated December 2015