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This chapter covers the range of issues which need to be considered when planning a new railway route or system. These issues are grouped under the three main aspects of sustainability: social, environmental and economic, while noting that there are inevitably some overlaps between them. This chapter therefore provides information which can help ensure that a holistic and comprehensive consideration of sustainability is embedded in the planning process. It also discusses how the various impacts associated with the construction and operation of a new railway route or system can be compared and assessed in order to determine whether or not a proposed rail scheme should go ahead.

This introductory chapter sets the context for the remainder of this book by setting out general concepts of sustainability and briefly discussing how they have impacted on railway system development over time. It considers the recent rise in prominence of environmental sustainability and how this is likely to increase the importance of railways in meeting society’s future needs for transportation.

The railway track system is the platform by which loads from moving trains are transferred to the underlying soil or supporting infrastructure such as bridges. The most common type of railway track system is ballasted track, which has been in use for over a century. Ballasted track has proved versatile. It can be constructed using locally available materials and with modifications to the rails and sleepers, crossings transferring trains from one route to another can be created. The structure of a ballasted track system consists of two main parts. The upper portion, termed the superstructure, comprises the rails, fastenings and sleepers. It is formed of components whose shape, stiffness and strength are designed and closely controlled. Below the superstructure is the substructure, which comprises the ballast and sub-ballast. Although the materials used in the substructure may have been specified, their engineering properties and geometric placement are less well controlled. In this chapter, we will explore how a typical ballasted track system transfers load to the ground and the ways in which the track form deteriorates, requiring maintenance and eventually renewal.

This book has reviewed the sustainability of rail engineering and operations with respect to both existing assets and new build in terms of the three pillars of economic, social and environmental sustainability. It is argued that the composition of a sustainable railway is well understood, but there are practical issues with delivery. These issues may be overcome with an emphasis on infrastructure provision, finance (and funding), top-down governance and bottom-up participation.

Stations have two main functions. The primary function of a station is to connect different modes quickly and easily with each other, this is when passengers are moving from one place to another. The secondary function is to make sure that passengers can spend their (waiting) time at a station in a pleasant way when they are staying at the station. Interchanges have to be designed to make moving as efficient as possible and staying as pleasant as possible. This means that users want a station where they can move safe, fast and easily and spend their time in a comfortable and pleasant way. The station experience can be enhanced with optimal (intuitive) wayfinding and environmental stimuli (e.g. music, light, colours, infotainment and advertisements) that can turn a transport interchange into an efficient node and a positive unique place. In this chapter, we explain how the quality of stations can be improved.

This chapter reviews the safety of railway operation in Europe particularly by examining the causes of fatalities over periods of up to three decades ending in 2017. Fatalities are examined to passengers, staff, level crossing users, and trespassers, together with a brief look at suicides. The accidents that attract most attention are fatal train collisions and derailments because they can result in multiple fatalities, and are in most cases wholly the responsibility of the railway operators. However, train accidents are infrequent, and account for only about 1% of all railway fatalities if suicides are included, or 3% if they are not. The fatal train accident rate per train-kilometre fell at a rate of 5.4% per year between 1990 and 2017 and was 77% lower in 2017 than it had been in 1990. This chapter goes on to discuss level crossings, which account for far more fatalities than train accidents, personal accidents, accidents to trespassers, and suicides. This chapter ends with a brief look at the evidence of the effect of rail restructuring on safety.

Community rail is a grassroots movement that spans Britain, made up of hundreds of community groups and partnerships that engage people with their railways and stations and provide a bridge between the rail industry and the public at a local level. The movement has grown up from the grassroots, but it has also been increasingly supported and nurtured by the rail industry, with train operators proactively encouraging its spread and development. They, and national and devolved governments, recognise the value of community rail, and its contribution to social inclusion, sustainable development and the railway’s ability to prosper and serve passengers and communities well, now and in the future. This idea is supported by passenger data showing that railway lines with community rail partnerships – working to enhance, promote and aid access to those lines – outperform comparable lines. A swathe of qualitative evidence shows community rail partnerships and station groups having a demonstrable impact on their localities and people’s lives, and appreciation of this role by industry leaders. The many examples of community rail volunteers and practitioners bringing about positive change resonate with academic research exploring how civic engagement and local efficacy and communications can support change, particularly with regard to sustainable behaviours and development. A range of researchers argue that localised, interactive engagement and communications may be the key, when it comes to bringing about the major shifts in behaviour needed to address the global, existential threat posed by the climate crisis, which unsustainable behaviours and policies have brought about. In this way, evidence suggests that engaging communities with their railways, and local transport networks generally, is critical, both to these networks operating in a truly sustainable manner and to achieving inter- and intra-generational equity within the communities they serve.

Earthworks are the embankments and cuttings that allow a railway to maintain a certain line, level and grade through the landscape. Earth embankments consist of an engineered bank of earth that carries the railway above the natural ground. A cutting is used to carry the railway through ground with a natural level above the line of the railway. Modern (post 1960s) earthworks are carefully engineered to perform well. However, many railways run on earthworks that were constructed over 100 years ago without the use of mechanised plant. The quality of construction of older earthworks was often poor compared with present-day engineering practice. Ageing of the earthwork structures, and the greater demands of heavier and faster trains and climatic change, means that earthworks suffer ultimate and serviceability failures that can present operational difficulties. Older earthworks that fail or do not perform well require maintenance and repair, and sometimes complete replacement. This chapter explores the main engineering considerations for modern earthworks, and the challenges associated with older earthworks including their modes of failure and upgrade and repair.

The role of railways within urban areas is analysed, covering ‘metro’ systems (self-contained heavy rail networks, often with substantial underground sections), light rail (both upgraded street tramways and newer systems), and travel by regional and national railways within urban areas. Basic operating characteristics, system capacity, capital costs, and technological change are examined. ‘Sustainability’ is analysed in respect of energy use and environmental impact, railways’ role in supporting high-density urban living (with associated benefits through greater use of non-motorised modes), and financial aspects (coverage of operating costs and ability to finance capital renewals). Current issues examined include the effect of users shifting to more flexible working patterns, the Covid pandemic, automation, and ownership. In general, urban railways can be seen to support a sustainable lifestyle, although some issues do arise in respect of longer distance commuting.