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The rocky pathway to halving our transport emissions by 2030

Brian Caulfield
17/4/2023

Present Tense

The 2023 Climate Action Plan sets out massively ambitious targets for reducing transport emissions before the end of the decade. But are these goals realistic? Decades of car-centric planning and dispersed settlement patterns mean that it will take a significant amount of time to deliver the large-scale infrastructure and behavioural changes necessary.

"Dublin Traffic". Image by Brian Caulfield

The reason we have to do so much now is because we have done so little for so long in transport investment.

The 2023 Climate Action Plan [1] sets out massively ambitious targets for reducing transport emissions by over 50% before the end of the decade. The plan cites a modelling approach that demonstrates these emission reductions are possible. This modelling exercise was given a target emissions reduction and the outputs of the model demonstrate which modes of transport we need to use more of, and less of, to reach this target. However, these models can in some instances fail to consider the most important part about transport planning — the citizen and the length of time it takes for behavioural change to happen.

If one wonders why are we in this situation in the first place, and why is it that we have to cut our emissions in transport so dramatically in such a short period of time. The answer to this question is because we simply have to — the climate emergency is such that waiting around for other solutions to come along or ‘magic technologies’ that will do the heavy lifting for us is no longer a viable solution. The reason we have to do so much now is because we have done so little for so long in transport investment. In 2019, it was shown that 74% of all of the trips we take in our country are done so by private car [2], and outside of Dublin the usage of public transport is sparse at best [3]. The decades of investment in major road schemes have also locked our citizens into a car centric culture, making the car the most attractive option to many and resulting in any change to this status quo being very difficult to achieve. Ireland is also a relatively sparsely populated country, compared to our European neighbours [4], and this makes the provision of public transport and active modes much more challenging.

In 2022, the OECD published a comprehensive analysis of the transportation sector in Ireland with a detailed review of the current strategies being pursued to reduce emissions [5]. The messages from the report were very clear — to have the type of systemic change that's required in our country involves a substantial reorganisation of the public realm in Ireland. The report also indicated that our current strategies of promoting the use and uptake of electric cars was regressive, and could potentially result in the car population in our country increasing. Research that was published by myself and my colleagues in 2022 demonstrated that the majority of electric cars in Ireland tend to be in the most affluent parts of our country. These are the areas where people drive the least [6].

Minister Eamon Ryan has said on several occasions that the transportation emissions targets will be the most difficult to achieve. He is correct, and this is mainly because how and why we travel are primarily linked to where we work and to where we live. For the majority of us, these locations rarely change. Equally, the time to plan, evaluate, and deliver large-scale, and even small-scale, public transport and active travel takes far too long in this country.  Changes to the built environment for more sustainable transport modes tend to be a lightning rod for heated debate, and small changes to local areas end up on the front pages of national newspapers. The type of changes that are required to cut emissions before the end of the decade by the magnitude required could cause severe division — unless they are handled in a way that brings everyone along the journey.

While I do think that we can achieve this 50% reduction in transport emissions, I do not think it can be achieved in the timelines outlined by the Climate Action Plan 2023. This is mainly because the delivery of large-scale transportation infrastructure takes a significant amount of time, and is very expensive.  Many of the large-scale public transport infrastructure projects like Metrolink or the light rail lines planned in Dublin and Cork require a large amount of planning and capital expenditure in a short period of time. Delivering the amount of infrastructure required in Dublin alone, in such a short space of time, would seem to me to be similar to a city planning to host a summer Olympic Games. Cities across the world that have achieved the sustainable transport goals that we plan for in Dublin, and our other cities, have been undertaking this change over decades. It takes a lot of political bravery to embark on these changes. It can take decades to plan and deliver large-scale public transport infrastructure, but equally, it can take that period of time for behavioural change to happen. We are often told about the cycling cultures in the Netherlands and in Denmark, but these cultures did not happen overnight and took decades to deliver.

To loop back to my initial opening statement, I believe that just because the models say something is possible, does not necessarily mean that it is feasible, or even achievable. Decades of car-centric planning and dispersed settlement patterns are at odds with the ambitions outlined for change in our mobility system. The 2022 OECD report [5] on transport in Ireland stressed that local level and community engagement will be key to achieving our goals. Achieving our climate goals will need both dialogue and consensus at a local level, matched with a national ambition of scale and complexity equivalent to the construction of Ardnacrusha in the 1920s to be successful.

The type of changes that are required to cut emissions before the end of the decade by the magnitude required could cause severe division — unless they are handled in a way that brings everyone along the journey.

Present Tense is an article series aimed at uncovering perspectives and opinions from experts in their respective fields on the key issues/opportunities facing Ireland's built environment. For all enquiries and potential contributors, please contact ciaran.brady@type.ie.

Present Tense is supported by the Arts Council through the Architecture Project Award Round 2 2022.

References

1. Caulfield, Brian, Dylan Furszyfer, Agnieszka Stefaniec, and Aoife Foley, Measuring the Equity Impacts of Government Subsidies for Electric Vehicles”, Energy, no. 248, 2022.

2. Central Statistics Office, National Travel Survey - CSO - Central Statistics Office, CSO, 2023, https://www.cso.ie/en/statistics/tourismandtravel/nationaltravelsurvey, [accessed 8 April 2023].

3. Government of Ireland, Climate Action Plan 2023, 2022, https://www.gov.ie/en/publication/7bd8c-climate-action-plan-2023, [accessed 8 April 2023].

4. National Transport Authority, Bus & Rail Statistics for Ireland - State Funded Services, National Transport Authority, 2022, https://www.nationaltransport.ie/wp-content/uploads/2022/09/Bus-and-Rail-Statistics-2021.pdf, [accessed 8 April 2023].

5. OECD, Redesigning Ireland's Transport for Net Zero: Towards Systems That Work for People and the Planet, OECD.org, https://www.oecd.org/publications/redesigning-ireland-s-transport-for-net-zero-b798a4c1-en.htm, [accessed 8 April 2023].

6. The World Bank, Population Density (People per Sq. Km of Land Area) - European Union, Data.worldbank.org, https://data.worldbank.org/indicator/EN.POP.DNST?locations=EU&most_recent_value_desc=false, [accessed 8 April 2023].

Contributors

Brian Caulfield

Dr Brian Caulfield is an Associate Professor and Head of Discipline in the Department of Civil, Structural and Environmental Engineering, Trinity College Dublin. Dr Caulfield has embarked on an intensive research programme addressing global issues, such as the environmental impacts of transport and methods to reduce the carbon impacts of transport. In 2017, he addressed the Irish Citizens Assembly on this topic. He recently provided advice to the Climate Change Advisory Council on pathways to decreasing transport emissions by 2030.

Related articles

Drafting Identity: The Loom vs the Machine

Róisín Hayes
Present Tense
Róisín Hayes
Ciarán Brady

In the new year I took up knitting. I had previously crocheted, but I find knitting easier, more rhythmic, and I am more drawn to the textures it produces. Recently, however, I learned that while knitting is often regarded as the more refined craft, crochet might in fact be more ‘valuable’. Knit stitches are predictable and therefore more easily mechanised. Crochet, by contrast, relies on complex, irregular knots that demand the tension and judgement of a human hand. What appears somewhat more sophisticated and polished is also more reproducible.

When asked to reflect on my experience as a female architecture student, this question of value - particularly of historically feminised crafts - felt unexpectedly relevant. Textile work has long been associated with women and domestic labour and therefore devalued and positioned outside the realm of serious production or art. Analogously, women architects were historically steered towards domestic architecture and interior design. Stratigakos notes, it was considered that the female designer’s ‘essential womanliness’ made them naturally suited to the home, a space which was private, emotional and minor [1]. Civic or infrastructural projects were considered prestigious and carried heftier financial rewards, and as such were reserved for male architects. Qualities associated with women such as emotion, interiority, and care - domesticity, were treated as secondary and women were excluded from typologies that defined architectural ambition.

Crochet. Image Credit: Róisín Hayes

Le Corbusier described the house as ‘a machine for living in’, prioritising standardisation, efficiency and rational function over decoration or atmosphere. The aesthetics of stark functionalism has continued to shape contemporary architectural culture. Optimised plans, clean sections, seamless renders are easily produced, easily legible, and easy to defend. Contemporary techniques of modular or panelised construction used in large office or housing blocks can feel nearly human-less, designed and assembled by ‘the machine’ - although of course manual labour has indeed occurred [2]. The new age of AI further intensifies this condition; the machine in architecture. It can generate compelling plans, sections, and images in seconds. What it excels at are the same qualities architecture has long rewarded. Yet, just as a machine cannot feel the precise tension required for a double or treble crochet stitch, it does not possess haptic perception or a true sense of scale. Juhani Pallasmaa argues in The Eyes of the Skin that contemporary architecture’s dominance of image and form often comes at the expense of touch and care [3].

I recognise these tensions in my own education and practise. Formal strength, productivity, and technological fluency are often what succeed in crits. A rational plan can be convincingly argued, a clear section is reassuring. I have learned to provide a clear drawing to explain every essential argument or design choice. What I find harder to justify are decisions rooted in emotion; how I want a space to feel, how I imagine a body moving through it, why a corner should sharpen or curve, if a space should feel bright or dark. The more intuitive or impulsive my reasoning, the more difficult it is to articulate graphically or otherwise within a culture that prioritises efficiency and reproducibility.

Knit. Image Credit: Róisín Hayes

As a result, those qualities which resist such reproduction - those historically coded as feminine such as care - atmosphere and emotional intelligence have come to feel more important to me. Anyone can now optimise a plan; fewer can design for the subtle choreography of inhabitation or the quiet negotiations of domestic life. Eileen Gray argued, “A house is not a machine to live in. It is the shell of man, his extension, his release, his spiritual emanation” [4]. These sentiments can be read in her design of E1027. For example, the spacing of Gray’s pilotis are derived from internal spatial properties rather than mathematical calculations, and, as such, are wider in public spaces and narrower in those that are private [5]. Her layered window system retains a Corbusian panoramic view while simultaneously addressing the body’s vertically [6]. Her resistance to mechanisation was not superfluous or emotional, but human.

Architecture cannot be entirely abstracted from lived experience; it cannot be wholly mechanised. It demands a sense of human scale and feeling. This begs the question; why were care and emotional intelligence ever confined to the domestic setting? Are these not also essential skills required for the design of hospitals, schools, offices, or train stations? Those skills, historically feminised and therefore dismissed, may prove central to the profession which is being redefined in the age of AI. This renewed importance does not signal a retreat to domesticity. Instead, the craft of architecture and its attentiveness to atmosphere, material, and embodied experience gains value. What was once dismissed as soft may prove resistant.

16/3/2026
Present Tense

In this article, Róisín Hayes starts our new mini-series ‘Drafting Identity’ which focuses on the experience of women in Architectural Education from both personal and professional perspectives, supporting the FIAE movement. Róisín explores the craft and making of architecture, and the emotional intelligence inherent in her work.

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Are communes the way forward?

Phoebe Moore
Present Tense
Phoebe Moore
Ciarán Brady

The very foundations of how we currently live seem at odds with the necessity of the moment. Historically, in these periods of flux and tension, breakaway groups form and the genesis of radical ideas are born. A classic example of such a breakaway is the ‘Commune’: "a group of families or single people who live and work together sharing possessions and responsibilities" and often presenting themselves as an alternative to the societal order that they arise from [1]. Stevens-Wood puts forward that communes or ‘intentional communities’ reflect the period in which they were formed - in the 1960’s and 70’s, a period often associated with communalism, these miniature societies were created in reaction to post-war traditionalism [2]. This was the golden age of communes, and perhaps also the period responsible for an enduring reputation of communes as, at best, unrealistic dreamers at odds with society at large and, at their worst, extreme hippy utopias restricting freedom and privacy.

The current forms of communal living find themselves reacting not to war, but a combination of the aforementioned issues with a similar desire to create something new. The question I would pose is, are they the way forward?

A plethora of terms exist for these alternative forms of living. Alongside communes, there are more palatable terms such as intentional communities, co-housing, co-living, and more in between. What do they all mean, and how do they differ, if at all?

Intentional Communities is somehwat of an ‘Umbrella term’ under which falls the three other terms described below. It is a community of people that have chosen to live together for one reason or another, often choosing to pursue a collective or social vision. According to Bill Metcalf “Intentional Communities are formed when people choose to live with or near enough to each other to carry out a shared lifestyle, within a shared culture and with a common purpose.” [3] Under this umbrella term, fall communes, co-living and co-housing.

Co-living first came into existence in the early 2000’s and picked up traction by the late 2010’s [4]. It is urban in location and offers private apartments set in large complexes offering shared spaces such as gyms, co-working spaces, rooftop gardens etc. One such example is The Collective, a co-living business founded in 2021 in London which recently received funding to expand into Europe and the US [5]. Its Acton North West London location offers 323 private apartments across an 11-storey building. Each apartment costs upward of £1,328 per month based on a 12-month lease [6]. Though The Collective describes its mission as building and activating spaces "that foster human connection and enable people to lead more fulfilling lives", its vast size, high price, and for-profit business model arguably takes the ‘intention’ away from ‘intentional communities’ [7]. In 2020, the Irish government removed co-living schemes from its permissible apartment guidelines, halting any new developments in the industry [8].

Co-housing, though similar in ways, offers some important differences to the pricey and aspirational co-living. Its birth can be traced back to the co-ops of 1960’s Denmark, offering residents more control, and a say in its design and model. Like co-living, this model offers a blend of both private and communal space. Separating its form from the broader strand of communes, co-housing communities tend to place a stronger emphasis on "the balance between community life and the privacy of individuals and households.” [9]. Often, the legal and ownership structure of co-housing models tends to be more complex than co-living and involves a co-operative model rather than direct owner occupier or leasehold  (as seen in co-living complexes) models.

Whilst both co-living and co-housing offer alternatives to the traditional homeownership, one seems significantly more democratic than the other - putting power in residents’ hands rather than developers. The question then, what are the examples of ‘intentional communities’ today both home and abroad?

Cloughjordan Eco village is a pioneering example of co-housing in Ireland and LILAC (Low Impact Living Affordable Community), in the United Kingdom offers an example of an urban ‘intentional community’ breaking new ground with its ownership model.  These two examples, like the original communes, operate under systems of shared values and community led decision making, but can be seen as modern evolutions of that form.

Cloughjordan Eco-village, based in Nenagh, North Tipperary, has been in existence since 1999 with its first residents moving in 2009. It is a registered CLG (Company Limited by Guarantee) which offers a not-for-profit structure whereby its members are its guarantors [10]. It has a population of over 100 living across 55 low-energy homes, with ecological and permaculture design principles guiding the ethos of the community [11]. Residents own their homes and also pay a fee to use the farm and reap its rewards—sustainable, organic food for the community. In 2012, it was voted one of the ten best places to live in Ireland by readers of The Irish Times [12]. Cloughjordan can be seen as a frontrunner in what may be a burgeoning future of more communal, sustainable modes of living in the country. Self-organised Architecture.ie lists four new co-housing initiatives each with their own aims of providing affordable and community led housing schemes.

By contrast, the United Kingdom is currently home to over 400 intentional communities and LILAC which saw its first residents moving in 2013, is a relatively new addition [13].

LILAC Co-Housing. Image Credit: www.lowimpact.org/posts/mutual-home-ownership-lilac

LILAC, based in West Leeds, is a community of twenty eco-build households built with panel timber walls insulated by straw bales. During its build, LILAC captured, and now stores, over 1080 tonnes of atmospheric C02 [14]. The community residents have their own private homes and gardens which are grouped around a separate common house. The sharing aspects of the community include voluntary communal meals twice a week as well as allotments, shared gardens, and carpooling schemes. In stark contrast to the connotations that surround communes, LILAC is ‘not immune to the real world’ yet sets out to change how people relate to their housing - seeing housing not as a commodity or a speculative asset, but an affordable space existing as part of a community and an eco-system [15]. This also means that homes in LILAC cannot be sold on the open market. The community itself functions as the developer keeping its homes immune from fluctuating housing prices and real estate value. The ownership model is based on a system called ‘Mutual Home Ownership Society’ which links housing cost to income, not market price. Residents pay 35% of their income with higher earners paying slightly more and, in return, gaining more equity. This scheme ensures that homes remain permanently affordable and also ensures that those on a lower or more precarious incomes have fair access to a home [16].

Based on these more contemporary examples of community-based living, a lifestyle once associated with complete interdependence and perhaps a lack of autonomy has evolved. In the examples of LILAC and Cloughjordan eco-village we see the positives of community interaction offered in tandem with an ability to maintain privacy. In each example, balance between the community and the outside world is emphasised. Cloughjordan Eco-village developed alongside an original village of the same name - by integrating the two settlements, a village in decline went the other way [17]. In this sense, it is a project in ecological sustainability as well as rural regeneration.  LILAC, states on its website the importance of the wider community with the co-housing settlement situated within a “flourishing neighbourhood in West Leeds” [18].

LILAC Co-Housing. Image Credit: Magdalena Baborska Narozny

With isolation and loneliness hitting an all-time high, increasing worldwide by 13.4% between 2009 and 2024; a catastrophic housing crisis affecting not just Ireland, but populations globally and a climate crisis which drives up living costs, the draw to a more communal style of living is tantalising and the importance of curbing the above trends, vital [19]. The above examples offer intriguing examples of living practices that manage to do just this. Nonetheless, despite their possible best intentions, critiques of intentional communities abound, Boys-Smith states: "At its best, co-housing is bowling together, sharing skills and taking a village to raise a child. At its worst, is it creating exclusive gated ghettos of the rich able to live, work and play safely sequestrated from the wider world?" [20].

A growing amount of literature documents similar concerns about the lack of diversity in a large number of these communal living experiments. Despite cheaper living costs going forward, often a large amount of capital buy in is needed at the beginning. In the case of Cloughjordan eco-village, buying a site alone was comparable to the cost of buying an entire home in its neighbouring village - “If you have limited means, buying a site for the same amount as you could buy a house, was a lot to ask” [21]. Given that isolation and loneliness is more prevalent amongst low-income groups, the need to ensure that housing options with a high degree of social integration and community are affordable is essential. Nonetheless, perhaps the strongest argument in their favour is their ability to promote human connection and belonging. Through living in proximity to others, we get the magic and ‘fizzy serendipity’ that urbanist Richard Sennett describes [22]. In a world that can feel more and more divided, surely the answer lies in its opposition.

23/2/2026
Present Tense

Topics such as housing, income inequality, and the environmental crisis are common topics of concern in 2026. At first, they appear hopelessly unsolvable and, once dug into a little deeper, completely interrelated. In this article, Phoebe Moore explores alternative housing models, and ways forward through communal living.

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Fellow humans

Felix Hunter Green
Present Tense
Felix Hunter Green
Ciarán Brady

Effectively a continuous zoom call encased in a three-metre tall stone frame, the portal arrived with a promise of diasporic fraternity and a message of shared humanity borne out of access to the same ‘liveness’. The project is regularly described by Gylys in profoundly optimistic, even techno-utopian terms: ‘I felt a deep need to counter polarising ideas and to communicate that the only way for us to continue our journey on this beautiful spaceship called Earth is together’, and later as ‘The addition of the Portal in Philadelphia is an exciting step forward in our mission to build a bridge to a united planet’. [1] This sci-fi language of ‘spaceships’ and ‘missions’ – that suffuses all publicity released by Portals Organization – seems to reveal that for Gylys, the specific urban contexts in which the portals are located are secondary in importance to the fact that cities have dense populations, and can therefore bring a maximum number of ‘fellow humans’ into remote contact.

There is generosity in this goal. While Gylys may be operating from an idealised stratospheric viewpoint, the installations themselves are nevertheless embroiled in the fabric of urban life – in the politics of real estate, and bear witness to the endlessly contingent cityscapes they exist within. [2] Insofar as they present an image that is truly ‘live’, they live among us.

In fact, their circular viewport, coupled with their stationary nature, means that the portals share something of a cultural lineage with a much older technology of civic novelty: the camera obscura. Particularly the popular Nineteenth-Century camera obscurae that were built to be public attractions on high vantage points in cities like Bristol or Edinburgh. When spending time with the images cast by both, the presence of a hypnotic and uncanny liveness – an endless, voyeuristic potentiality – can make it difficult to look away for fear of missing something.

A view of Edinburgh Castle from the Camera Obscura in Castlehill. Image Credit: edinburghcameraobscura.wordpress.com

The portals differ from these darkened rooms however, because unlike the rarefied, sanitised views offered by these constructions they address the street at just above eye-level. In Skyline: The Narcissistic City, cultural historian Hubert Damisch outlines a divergence in the historical representation of urban space between ‘birds-eye-view’ depictions and maps that abstract and seek to rationalise cities – ‘Does the city remain “real” when considered from such distances [...]’ – and street-level depictions that present urban space as lived, contingent, and personal. [3] Damisch argues that the perspective techniques used by the painters Canaletto and Brunelleschi to produce realistic veduta paintings imply and demand a subject. [4] Veduta means ‘view’ in Italian, and there is no view without a viewer.

Camera obscurae are distinctive today for their relative stability. Unlike ubiquitous jittery smartphone video feeds, a camera obscura will generally remain still, allowing the world outside to move silently past within its static frame. A decision therefore needs to be made about what its aperture should be trained on. Will there be enough movement and visual interest from this or that vantage point? There is a politics of performative urban representation implied in this decision. What kind of scene, what view of ourselves and of our space justifies the building of a camera obscura? A similar value judgement applies to each portal.

Many Dubliners were initially bemused and apprehensive at the choice of location on North Earl Street. Sitting in the afternoon shadow of The Spire, and across the road from the GPO, it is placed in a historically significant part of the city, but also an area – ‘D1’ – that is notorious among locals for its high concentration of social issues. There was much talk at the time of; ‘why we can’t have nice things’, and the early weeks of the portal saw enough of what was deemed inappropriate behaviour from both cities to generate a viral international interest in the portal, and a temporary suspension of its video feed.

'RIP THE PORTAL, 8th - 14th May 2024, SORRY WE MOONED YOU'. Image Credit: Felix Hunter Green

It is significant that it was placed in the heart of D1, rather than an alternative, more predictable cultural hotspot. Since its installation planters have been placed immediately in front of the screen, to create distance between the portal and the crowd, and the steady stream of visitors to the portal appears to be bringing a form of passive communal surveillance to the street, along with bringing custom to the area. Regardless of the location choice however, the important thing is that the portal greets us where life happens, at street level, rather than from on high. For this reason, and despite its sci-fi billing, it enacts a useful resistance to a pervasive trend in tech ideology to operate inter-planetarily, agelessly, and it ends up doing something simple – it enables eye-contact.

Dublin at night as seen in the Ipswich Portal. Image Credit: Felix Hunter Green

15 minutes beside the Dublin Portal, late October 2025  – Observational Text by the Author

We’re looking at a street-level view of somewhere in the UK.

        A woman in a black knee-length jacket does a shimmy dance in the centre of the circular frame while a group of tourists film her from our side.

Someone is on their phone waving into the screen, someone on screen – also on a phone – waves back.

       We’re in Poland. But this camera angle seems to be more buildings than pavement and there’s no one in view.

       Then, suddenly, we’re in Lithuania. An empty square, wet cobblestones and white street lines stretch off towards a grand seeming civic building.

There must be more than twenty people gathered here in the rain at this point, James Joyce’s hat and glasses standing only just taller than the cluster of black umbrellas.

       The square is still empty, a man with a dog on a lead walks through the centre of the frame from left to right.

       A young woman and man emerge from the bottom of the frame and turn to us while on the go, waving their bound umbrellas at us as if afraid of appearing rude.

It feels like we should see ourselves on the screen, as if we were taking a group selfie. We sense that we are performing, but we disappear at this end.

       Lithuania is busy now. It is wet there too.  

Three people here have not moved from their position at the front since I've been here. It feels like they are waiting for someone.

On our side a woman in a red velvet dress with a black umbrella pirouettes and curtseys while on her way into North Earl Street.

A seagull sits atop the portal.

17/11/2025
Present Tense

In May 2024, the Lithuanian artist Benediktas Gylys installed a portal between Dublin and New York. In this article, Felix Hunter Green explores how the portal (the third of its kind at the time) introduced a new form of present tense, a remote urbanism, to the fabric of North Earl Street.

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