A photographic record of the Class 97/3 locos on test and at work on the Cambrian, as part of the ERTMS signalling project. Part 1 is also available, which deals with the large variety of visiting traction that the line had between March 2005 and January 2011. A third book will be available which will be a combined volume, though with a few images taken out (to avoid too much unnecessary duplication). Please note that while the preview only shows the first 15 pages, the book itself runs to 58 pages.