The metre-gauge railways of South East Asia are a popular destination for railway enthusiasts from all over the world. In this book, Peter J. Green looks at the national railways of Thailand, Malaysia, Cambodia, Myanmar and Vietnam in the twenty-first century. While all these railways are modernising at varying rates, it is still possible to step back into the past and experience train travel behind diesel traction, often in carriages with windows that open, through varied and interesting landscapes. Semaphore signalling is disappearing rapidly but can still be seen in parts of Thailand, Myanmar and Malaysia. With a wealth of previously unpublished photographs, this book offers a fascinating insight into the railways of this rapidly changing area of the world.