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...

*Updated to 6th February, 2016*
Most people's issue with electric vehicles is that of range anxiety because charge point infrastructure is not fully developed. This book explores and clarifies the current situation and provides a wealth of detail; from the background history of charge points, different vehicle charge connectors, charge point types, to a list of the main UK and Ireland charge point organisations. If you are thinking of buying an electric vehicle or already drive one, then this book is a must for you
Finally, if you work for any of the following...