Tag Archives: low traffic neighbourhoods

Guest post: Sustainable cities after COVID-19: are Barcelona-style green zones the answer?

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Photo by Kaspars Upmanis on Unsplash

Guest post by Anupam Nanda, University of Manchester

The lockdowns and restrictions introduced to control the spread of COVID-19 have resulted in huge changes to urban life. Previously bustling city centres remain empty, shunned in favour of suburban or rural areas where social distancing is easier and connections to the outdoors are abundant.

The roll out of vaccines provides hope for a partial restoration of normality in cities. However, the impact of COVID-19 could last much longer.

In particular, the pandemic has shown how damaging congestion, pollution and lack of green space can be – including how these factors have contributed to the severity of suffering for city dwellers. We have an opportunity to change city living for the better.

Barcelona offers an example of how city areas can be transformed to reduce pollution and increase access to green space.

The city pioneered the concept of superblocks, first introduced in 2016, as part of green urban planning. Superblocks are neighbourhoods of nine blocks. Traffic is restricted to major roads around the superblocks, leaving the streets inside for pedestrians and cyclists.

Recently, further plans have been announced to expand green zones in the city’s central district, Eixample. This is a major expansion of low-traffic zones, giving priority to pedestrians and cyclists to reduce pollution and provide green spaces.

The new plan will cover 21 streets and have space for 21 new pedestrian plazas at intersections. At least 80% of each street is to be shaded by trees in summer and 20% unpaved. A public competition in May 2021 will decide the final design.

The purpose of the plan is to ensure that no resident will be more than 200 metres from a green space.

There are many benefits to creating urban green spaces like these. They include an improvement in air quality and noise levels on the car-free streets, and a reduction in levels of nitrogen dioxide (NO₂) from road traffic. Exposure to high level of NO₂ can lead to a range of respiratory problems.

Green spaces have been shown to improve mental health, as well as lead to a reduction in risk of obesity and diabetes – conditions which significantly increase vulnerability to COVID-19.

COVID-19 has made the case for green urban planning even more compelling. However, these plans can come at a cost.

Barriers to green cities

A particular negative impact of green zones could be a high demand for housing, leading to subsequent rises in property prices. This can lead to gentrification and displacement of local residents and businesses. Care must be taken to make sure that homes remain affordable and urban green zones do not become rich enclaves.

The COVID-19 lockdowns highlighted the difference in living conditions faced by city dwellers. Green initiatives must work for all socio-economic groups, and must not exacerbate existing inequalities.

In addition, while city centres are the usual focus areas for greening initiatives, suburbs and other peripheral areas also need attention. The goal is to reduce carbon dependence in total – not shift it from one area to another, or one sector to another.

The plan should also include steps to make private and public transport completely green. This could include replacing carbon-producing transport system with zero-emission vehicles and providing ample infrastructure such as dedicated lanes and charging stations for electric vehicles.

Cities differ hugely in how they look, shape and operate. One size will not fit all. If other cities choose to follow Barcelona’s model, local issues must be carefully considered. Superblocks work really well in a neat grid system such as in central Barcelona. But many cities do not have a well-designed grid system.

However, the principles of green, environmentally friendly, car-free or restricted-traffic neighbourhoods can be adopted in any city. Examples of schemes include low-traffic neighbourhoods in London, the 15-minute city initiative in Paris, or Manchester’s plans for a zero-carbon city centre.

While adopting such interventions, it is important to keep citizens’ daily needs in mind to avoid adding extra burdens on them. If motor traffic is to be limited, the availability of public transport must be considered, safe infrastructure for walking and cycling as well as adequate road structure for essential services or deliveries.

Significant capital investment is needed to support these plans. The Barcelona plan is projected to cost €38 million (£34 million). Much more will be required if it is to roll out to more areas. Cities in the developing world and poorer countries cannot afford such huge sums. Moreover, COVID-19 has left several cities laden with a huge amount of debt.

Green city initiatives need to be long-term – and created with the support of local people. Recognition of the benefits of green living and informed support of developments will result in positive behaviour changes by the citizens.

Anupam Nanda, Professor of Urban Economics & Real Estate, University of Manchester

This article is republished from The Conversation under a Creative Commons license. Read the original article.

Further reading: more from our blog on tackling air pollution in cities:

 

Virtual knowledge: recent webinars on public and social policy

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Earlier in the summer, we shared some of the information our Research Officers had picked up while joining webinars on public and social policy.

Since then, we’ve taken part in more of these virtual seminars, and in today’s blog we’re providing an overview of the wide range of topics covered.

Low traffic neighbourhoods

Earlier this month, Project Centre, which specialises in public realm regeneration and sustainability, organised a webinar on the challenges of implementing Low Traffic Neighbourhoods.

Low Traffic Neighbourhoods (LTNs) are a group of residential streets where through traffic is removed or discouraged, and any remaining traffic must operate at a pedestrian pace. The focus is not only to reduce congestion and improve safety by getting traffic back onto main arterial road networks, but also to provide environmental benefits, improve public health, community cohesion and encourage people to spend more, quality time in the areas where they live by making places “liveable”.

This webinar looked at the design and implementation of Low Traffic Neighbourhoods, with guest speakers from two local authority areas (Waltham Forest and the Liverpool City Region), as well as designers from Project Centre who support the implementation of Low Traffic Neighbourhood Schemes. The speakers discussed their own experiences designing and implementing low traffic neighbourhoods and shared potential lessons for those looking to implement their own scheme.

The speakers all emphasised some key elements to effective design and implementation of LTNs they included:

  • LTNs are not just about transport, they can have health and wellbeing, community cohesion and crime reduction and economic impacts for local businesses as people are encouraged and enabled to shop more safely in their local areas.
  • schemes should be done with communities, not to them
  • LTNs should be designed with everyone in mind to bring pedestrians and cyclists “on par” with cars in terms of the use of street space
  • effective data and evaluation can help build a case for wider roll outs.

The new long life: a framework for flourishing in a changing world

This webinar was delivered by the International Longevity Centre (ILC) and included a number of speakers from a range of backgrounds who came together to discuss the impact of longevity and ageing on our engagement with work and the labour market, particularly in relation to digital technology and the changing nature of work post COVID-19. Speakers included Prof. Andrew Scott, Caroline Waters, Jodi Starkman, Stefan Stern, Lily Parsey and George MacGinnis.

Many of the speakers highlighted the difference between the ageing agenda and the longevity agenda, explaining that while many of us will live and work for longer than ever before, the nature of work and the stages of life are changing in a way that for many will be unrecognisable as the “traditional life journey”.

They stressed the need to move away from “traditional linear thinking” about how we age, with education at the start, mid-life being punctuated by work and potentially parenthood, then retirement, and that ageing in the future will be full of more “life stages” and more mini cycles where career breaks, learning and other life “punctuations” will take place at different times of life. It was suggested that the nature of work will change so much that re-learning and at times re-training will be a necessity at multiple points in life, and not just by those who change career deliberately.

Ageing well must, according to speakers, remain high on the policy agenda of future governments to ensure that the growing population of older people can live lives that are enjoyable, purposeful and productive and can contribute to wider society well into what would currently be considered “old age”.

Clearing the air

This has been a year like no other. But while attention has rightly focused on the number of Covid-19 fatalities – more than 800,000 worldwide – there is another hidden killer which has been responsible for more deaths than coronavirus, HIV and malaria combined. Research has found that air pollution caused an extra 8.8 million deaths around the world in 2015.

We’ve written before about efforts to improve air quality, and in July a webinar organised by Catapult Connected Places looked at further innovative ways to understand and tackle air pollution across the globe.

Eloise Marais,  an Associate Professor in Physical Geography at UCL talked about TRACE – the Tool for Recording and Assessing the City Environment – that she is developing using satellite observations of atmospheric composition. Satellites offer more complete and consistent coverage than surface monitors, and satellites can also monitor many air pollutants, such as sulphur dioxide, ozone, nitrogen oxides and fine particulate matter.

But while satellites have a long and well sustained record of recording data – some have been in space for more than a decade – their measurements have limitations in terms of spatial resolution. At the moment, these can only cover city-wide air quality, rather than providing postal code measurements. Eloise explained that, while satellite data has been used to show that air quality improvement policies have been effective in London as a whole, they cannot yet confirm that in some parts of the city pollution levels are not falling. Even so, Eloise noted that spatial resolution is improving.

Later in the webinar, Bob Burgoyne, Market Intelligence Team Lead at Connected Places Catapult talked about the Innovating for Clean Air India Programme. India is home to 14 of the world’s most polluted cities. One of these, the city of Bangalore is especially badly affected, and Bob described a project which aims to improve the city’s air quality and enable a transition to electric vehicles. The Catapult network has been working with academic and professional bodies, and with small and medium sized enterprises in India to measure and demonstrate the impact of pedestrianizing a major street in Bangalore on Sundays. The long term goal is to permanently pedestrianise the street, and to demonstrate active and electric mobility solutions.

Back on track: London’s transport recovery

This webinar, organised by the Centre for London, discussed the impact of the Coronavirus pandemic on London’s transport systems and explored the impact of changes to Londoners’ travel habits on the actions required for recovery.

The event included contributions from Rob Whitehead, Director of Strategic Projects at Centre for London, Cllr Sophie McGeevor, Cabinet Member for Environment and Transport at London Borough of Lewisham, and Shashi Verma, Chief Technology Officer and Director of Strategy at Transport for London.

A major concern raised by speakers was that current trends indicate that car usage is returning to normal levels faster than any other form of transport. Public transport, such as bus and tube, is slowly recovering but its usage is often linked to changes to lockdown restrictions, with surges in use as restrictions are lifted that very quickly level off. Additionally, although it appears that active transport use has increased, this increase tends to be at weekends and is more apparent in outer London.

As a result of these trends, there is a serious concern that levels of traffic in London may exceed the levels experienced prior to the lockdown. Currently, road traffic is at roughly 90% of normal levels, if this rises to 110%, the resulting congestion will result in gridlock and could have major implications for London’s economy.

How should we use grey literature?

This webinar was organised by the CILIP Health Libraries Group, for CILIP members to learn about and discuss how grey literature is used by libraries, and the benefits and challenges of making use of such content.

The main talk was delivered by two members of the library team from the King’s Fund – Deena Maggs and Kathy Johnson – who emphasised the importance of grey literature as a means of delivering timely and up to date information to users, particularly in the context of health and social care policy, where information needs tend to be very immediate.

The session involved discussions about the usefulness of grey literature in terms of Covid-19 recovery planning, as well as the challenge of determining the credibility of content which is not peer reviewed or commercially published.

The speakers gave practical advice around selecting and evaluating such sources, and highlighted the broadening range of ‘grey’ content that libraries can make use of, such as audio recordings, blog posts, and Tweets.

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