The rail human factors/ergonomics community has grown quickly and extensively, and there is much increased recognition of the vital importance of ergonomics/human factors by rail infrastructure owners, rail operating companies, system developers, regulators and national and trans-national government. This book, the fourth on rail human factors, is drawn from papers presented at the London 4th International Conference on Rail Human Factors. The contributions cover the range of human and organisational issues on the railway, from driving to signalling and control to maintenance and engineering work, to passengers and security issues such as trespass, and address improvements in safety, reliability, use of capacity, efficiency and quality. The book represents the best of recent work in rail human factors, and starts to define the framework for the next few years. As well as the human factors areas listed above, the conference and thus the book are notable for sessions on simulation in rail human factors and on human factors in metro design and operation. The book also reflects the increased attention being paid to, and developments in, understanding all aspects of rail stakeholders’ behaviour, and also the contribution of ergonomics/human factors to innovative network control systems which will enhance reliability, safety and use of capacity. The book will be of interest to a number of groups: those working in the rail sector from a human factors point of view; the larger rail industry and related bodies generally; and in terms of transferrable knowledge to ergonomists and human factors specialists working in other industries.