Assurance, as a broad term in the context of rail projects, is a means for gaining confidence in project delivery against one or more objectives. However, it is also a term which is used by a wide range of people to mean different things, and therefore a source of considerable confusion. 

Drawing on over 20 years’ experience as an assurance practitioner, Katherine Eastaughffe aims to clarify key assurance concepts by identifying different dimensions of assurance in the context of rail projects, while also considering what the goals or claims should be for each dimension and demonstrating the close relationship between systems assurance and systems engineering activities.

The paper concludes with some considerations for planning effective assurance activities, based on the concepts and goals discussed and the close relationship with systems engineering principles.

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