Case Study -Creating the WCRM Concept of Operations

Abstract. This paper describes our experience in defining a suitable style, structure, content and set of features for the West Coast Route Modernisation (WCRM) Concept of Operations. The ability to capture the operational context of the future West Coast Main Line (WCML) railway is a critical integration activity, and key to the successful delivery of the WCRM, in particular as operational improvements contribute to a large part of the performance improvements on a railway. In the absence of guidance or standards for the production of operational concepts documents for a subject as vast and complex, we have applied rich traceability and requirements engineering best practice, with the aim to produce fit for purpose, clear and useable documentation. This paper also presents the relation between the Concept of Operations and the rest of the WCRM Systems Engineering activities, in particular its influence on the Systems Design Specification. It summarises the lessons learned and planned future developments

MEASURING SYSTEM PERFORMANCE OF ROAD USER CHARGING SCHEMES

ABSTRACT Road user charging (RUC) is a relatively new term that embraces all policies that charge for road space. In popular literature the term 'tolling' is often used as a generalisation to cover demand management as well as funding the development and operation of new infrastructure. This confusion extends to the measures by which the performance of charging schemes is assessed. Applying the same measures to schemes that have different policy objectives for the purposes of comparison or to develop a business case for the scheme risks introducing large errors and consequently suboptimal decisions on scheme design and operation. This paper describes the different policy options, their respective strategic objectives and introduces performance measures for each. Common misconceptions are explored and alternative suggestions are made to improve the accuracy by which some performance measures can be compared even if the underlying objectives are different. The techniques are applicable to RUC scheme designers and organisations that wish to assess scheme efficiency and value for money

Industrial Control Handbook

xix.802 : 24c