I don't have that book, but I do have a few of Peter Riddle's other books and they are all very informative and very well written. I really like his writing style and for me his books are easy reads. He is also very knowledgeable on the subjects in the books I have. I can't say the same for some of the other train book authors.
IMO, going by his other books, I would imagine it would be a good book.