Duncan Edghill • November 11, 2024

Light Rail's Revival

Light rail is undergoing an exciting renaissance as old fashioned, clunky trams are metamorphosed into sleek, modern vehicles. Canberra offers a case study into how to maximise the benefits of the return to the 19th century transport standard, integrated with 21st century urban-planning principles.

Throughout Europe, the United Arab Emirates, China, the Americas and now Australia, cities are building new, technologically advanced light-rail networks as part of the solution to anticipated congestion and transport challenges of the future. 


Public officials and engineers responsible for building light rail networks often extol the virtues of light rail as a public transport option, in terms of defining a city’s character, boosting economies, connecting growing and changing populations to key destinations, and reducing emissions. 


Light rail has the capacity to address many of the transport challenges associated with modern cities. However, its benefits are most effectively realised if it is designed and delivered alongside other greater city-building initiatives. 


Canberra, for example, is already reaping the rewards of revitalising city precincts, stimulating residential development along rail corridors and boosting local economies through increased business investment, all while containing urban sprawl. 


Average house prices along the light rail corridor between Gungahlin and the CBD grew at a faster rate than those in other ACT suburbs, and additional development in these areas will support further population growth. 


Key hubs along the line are also seeing increased commercial interest as the permanency of a fixed-line light rail underpins confidence in the market. 


As cities grow and densify, another significant benefit light rail can offer is an attractive and accessible transport option for commuting workers, students and tourists. Good infrastructure is designed to maximise citizens’ wellbeing, and light rail is an excellent tool for connecting people across demographics and social barriers. 


Canberra’s light rail also serves to illustrate this opportunity, as the line connects the city’s fastest-growing residential area to the city centre, a similarly fast-growing hub for jobs and recreation. 


With attractive, comfortable, safe and easily accessible vehicles for citizens of all ages and abilities, the ACT’s light-rail system is well-placed to connect an ageing population, increasing numbers of inner-city families, and people with disabilities throughout the city for decades to come. 


Undoubtedly, climate change will dramatically affect the way our cities are planned and how people move within them – possibly even more than population or demographic changes will. Choking in smoke while idling in stand-still traffic along arterial roads is hardly a pleasant experience, yet this is what may lie in store for city residents if emissions aren’t reduced and investments made in public transit. Light rail again offers an attractive, emissions-free alternative. 


Light-rail vehicles run off not fuel but electricity, which can be generated using renewable sources, as is the case in the ACT. Meanwhile, engineering breakthroughs such as regenerative braking can further maximise energy efficiency. Instead of getting in their cars and contributing to road congestion, Canberrans can cycle or walk to a light-rail stop, expect to board within five to six minutes, and enjoy a climate-controlled journey into their place of work or study. 


Emissions targets are only one consideration when planning for light rail into the future. Engineering solutions for temperature control, urban heat island effect, biodiversity impacts and deteriorating soils, to name just a few challenges, are paramount in planning light-rail networks into the future, in the ACT and elsewhere. 


All of these benefits are intrinsic to light rail, but it is important to remember they have been realised in conjunction with other city-building initiatives, including revitalisation projects in these key hubs and housing development programs. Similarly, Norway’s light rail in Bergen was conceived not only as a transportation project but as one part of an enormous urban-development plan to connect the airport, outer-city suburbs and key development hubs. It’s been a similar story in other European cities – Bordeaux, Angers and Bern. 


To harness the potential of light rail to address the challenges future cities will face, governments must balance urban-design considerations alongside technical solutions, and ensure transport operations are central to informing the design of the entire network. 


The future of light rail is bright. But, as Canberra’s example shows, it is essential to understand the drivers and objectives for light rail before delivery to ensure its success. In the ACT, a clear statement of aspirations helped guide the planning and ultimate success of Stage One of light rail, and will continue to guide future extensions of the network across the city. 


City planners, engineers and members of parliament considering bringing light rail to their cities would do well to remember the value light rail can bring, but also how those benefits can be limited if not accompanied by a city-wide master plan or other infrastructure investments. If in doubt, perhaps they should look to Canberra. 


Duncan Edghill is the Chief Executive Officer of ALTRAC Light Rail.


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