This unique handbook is for anyone interested in how to justify and build light rail systems. Coverage includes the problems faced by light rail promoters and planners; the process of route identification; and more. This unique book is for anyone interested in how to justify and build light rail systems in the age of limited resources and green technologies. The historical introduction addresses how many of the problems faced by light rail promoters and planners are not new and how existing solutions can be used to save time and money. The planning chapter explains the process of route identification on the basis of travel patterns and maximizing modal switch. The engineering chapter shows the costs of infrastructure equipping and commissioning a new light rail system. The economic evaluation chapter shows promoters how each line can be assessed for viability comparing the capital cost of construction with expected revenue including sensitivity to different fares market conditions and operating costs. In conclusion the book reviews how to keep a light rail system attractive to riders and investors after opening.