Can “co-creation” help cities find a new way to solve their problems?

Hamburg: one of the cities exploring the benefits of “co-creation”. Image: Getty.

Every city is a puzzle. Where do you build new houses? What happens to traffic flow if you add another pedestrian crossing to a busy road? Why aren't more people using the sports facilities at their local park?

Questions like these, along with countless others that touch upon everything from bus shelters to bollards, are the sort of thing that keep urban planners up at night. Sometimes they dream up the right answer; sometimes their solutions anger local communities – especially if those communities feel they haven’t been properly consulted.

But what if there was a way to tap into the collective wisdom of citizens and involve them in shaping their surroundings?

That’s the promise of co-creation, which aims to break down hierarchies between local government, business, academia, citizens and other stakeholders. Ideally it should lead to greater innovation, better targeting of resources and an increased sense of ownership of projects and their outcomes. In short, it’s a bi- or multi-directional approach to problem solving, rather than a top-down or bottom-up one.


Private sector companies have been toying with the technique for some time, drawing on the loyalty of their customers to tap into ideas that might not arise in the boardroom and foster support for new products. Then there's OpenIDEO, a well-established "design and innovation" platform for people who want to use their talents to solve global challenges such as climate change and the energy crisis.

Now an increasing number of cities are using co-creation platforms to tackle challenging issues like mobility, air quality and urban regeneration too. The Nexthamburg project, for example, was launched in 2009 to source innovative and creative ideas for urban development in Hamburg.

Medellín, Columbia, has also developed a platform called Mi Medellín to sound-out citizen solutions to urban challenges. And Better Reykjavik allows Reykjavik citizens to submit their ideas for everything from school opening times to new playgrounds, and played a key part in the transformation of the main commercial street in the city, the Laugavegur, to a pedestrian only zone.

OrganiCity, a €7.2m EU-funded project, aims to apply co-creative practices to three leading smart cities: Aarhus, London and Santander. Rather than searching for the perfect solution to every urban problem, the project aims to shift the focus of smart city intiatives toward experimentation. At its core lies a recognition that if smart cities haven’t delivered on their promise so far, it’s because they’ve all too often been viewed as a series of technological challenges that need to be solved, rather than a complex cultural, financial, legal and organisational one.

A screenshot from Mi Medellín. Click to expand.

Aarhus, London and Santander are very different cities – culturally, organisationally and size-wise – so experiments which work across all three cities could eventually work in other cities that join the project. A quarter of the OrganiCity budget (€1.8m) will also be set aside for an estimated 25-35 projects suggested by citizens. There will be two open calls for submissions; the base challenges for the first open call in January 2016 are mobility, air quality and connecting communities (which is a particular concern for London citizens).

“There's lots of stuff the bottom-up approach can do,” says John Lynch, who's leading the project on behalf of Future Cities Catapult, “but there's lots that it can't. And the top-down approach tends to be ‘go to the public and do a qualitative analysis or survey, or run a couple of focus groups and meet-ups, or stick a piece of paper on a lamppost and hope someone reads it’. We're hoping we can, as far as experimentation goes, make it a bit more of a mutual process.”

Lynch hopes the platform will ultimately act as a networking and enabling service for innovation. “Imagine if, when you have an idea, there's a lounge you can go to where you can find out how to run a workshop and develop it further,” he says, “or about some technology you can immediately hook onto, or someone who has a similar idea who you could collaborate with.”

Ideas for experiments will be sourced through a combination of workshops, meetups, conferences and online discussion on message boards and social media. The hope is that a more open approach to experimentation will stop smart city projects becoming trapped within health, environmental and urban mobility silos, which can limit the overall effectiveness of a smart city.

Along for the ride

It's not hard to see how co-creation could also help tackle some of the problems associated with urban regeneration projects, which alienate long-standing communities. Dr Rachel Sara, the programme leader for Master of Architecture course at the University of the West of England, believes co-creation can also help to break down barriers between academia and citizens too.

By way of example, she points to Hands-on-Bristol, a co-creative initiative which saw students and academics collaborating with the Bristol community on a number of live projects. Nooks and Crannies, for instance, focused on the redesign of a link bridge and access lane; while the Redcliffe Wharf Outdoor swimming project produced a design for clean, safe and financially viable swimming within Bristol Harbour.

A screenshot from Hands-on-Bristol. Click to expand.

These projects allowed students to experience the conflicting agendas of diverse groups, and local citizens got to benefit from resources that often remains trapped within the university. “We wanted an architectural education to be much more connected with the city in which it's a part,” says Sara. She describes the live projects as “forms of cultural and community activism” that aim to “empower the participants to take direct action and change their spaces to better suit their needs”.

The form-filling, red-tape and town hall meetings that are the bread and butter of traditional public participation can seem rather stale in comparison to platforms like CitizenLab, a new civic engagement platform that any city can roll-out. It allows anyone to come up with an idea, post it, interact with other people's ideas and upvote their favourite ones via anonymous polls. Gamification techniques are also used to reward citizens for their input; every action they take results in an increase of their engagement score. This in turn leads to citizen badges and real-life benefits like theatre tickets.


Like many other co-creation platforms, CitizenLab is designed to shift participation in urban planning beyond a select group of vocal citizens who have the time and motivation to attend town hall meetings. "That’s the main advantage of online civic engagement,” says Wietse Van Ransbeeck, founder and chief executive Of CitizenLab. “You can reach an audience that otherwise you would never reach."

With cities facing increasingly complex issues around affordable housing, public transit, gentrification and climate change, it seems likely that more of them will seek to tap into an underutilised resource: citizens with smart ideas.

"I believe we're moving beyond an era where we are willing to let the state decide what our neighbourhoods need," says Sara. Given how many cities are now experimenting with co-creation techniques, it seems she might well be right.

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How bad is the air pollution on the average subway network?

The New York Subway. Image: Getty.

Four more major Indian cities will soon have their own metro lines, the country’s government has announced. On the other side of the Himalayas, Shanghai is building its 14th subway line, set to open in 2020, adding 38.5 km and 32 stations to the world’s largest subway network. And New Yorkers can finally enjoy their Second Avenue Subway line after waiting for almost 100 years for it to arrive.

In Europe alone, commuters in more than 60 cities use rail subways. Internationally, more than 120m people commute by them every day. We count around 4.8m riders per day in London, 5.3m in Paris, 6.8m in Tokyo, 9.7m in Moscow and 10m in Beijing.

Subways are vital for commuting in crowded cities, something that will become more and more important over time – according to a United Nations 2014 report, half of the world’s population is now urban. They can also play a part in reducing outdoor air pollution in large metropolises by helping to reduce motor-vehicle use.

Large amounts of breathable particles (particulate matter, or PM) and nitrogen dioxide (NO2), produced in part by industrial emissions and road traffic, are responsible for shortening the lifespans of city dwellers. Public transportation systems such as subways have thus seemed like a solution to reduce air pollution in the urban environment.

But what is the air like that we breathe underground, on the rail platforms and inside trains?

Mixed air quality

Over the last decade, several pioneering studies have monitored subway air quality across a range of cities in Europe, Asia and the Americas. The database is incomplete, but is growing and is already valuable.

Subway, Tokyo, 2016. Image: Mildiou/Flickr/creative commons.

For example, comparing air quality on subway, bus, tram and walking journeys from the same origin to the same destination in Barcelona, revealed that subway air had higher levels of air pollution than in trams or walking in the street, but slightly lower than those in buses. Similar lower values for subway environments compared to other public transport modes have been demonstrated by studies in Hong Kong, Mexico City, Istanbul and Santiago de Chile.

Of wheels and brakes

Such differences have been attributed to different wheel materials and braking mechanisms, as well as to variations in ventilation and air conditioning systems, but may also relate to differences in measurement campaign protocols and choice of sampling sites.

Second Avenue Subway in the making, New York, 2013. Image: MTA Capital Construction/Rehema Trimiew/Wikimedia Commons.

Key factors influencing subway air pollution will include station depth, date of construction, type of ventilation (natural/air conditioning), types of brakes (electromagnetic or conventional brake pads) and wheels (rubber or steel) used on the trains, train frequency and more recently the presence or absence of platform screen-door systems.

In particular, much subway particulate matter is sourced from moving train parts such as wheels and brake pads, as well as from the steel rails and power-supply materials, making the particles dominantly iron-containing.


To date, there is no clear epidemiological indication of abnormal health effects on underground workers and commuters. New York subway workers have been exposed to such air without significant observed impacts on their health, and no increased risk of lung cancer was found among subway train drivers in the Stockholm subway system.

But a note of caution is struck by the observations of scholars who found that employees working on the platforms of Stockholm underground, where PM concentrations were greatest, tended to have higher levels of risk markers for cardiovascular disease than ticket sellers and train drivers.

The dominantly ferrous particles are mixed with particles from a range of other sources, including rock ballast from the track, biological aerosols (such as bacteria and viruses), and air from the outdoors, and driven through the tunnel system on turbulent air currents generated by the trains themselves and ventilation systems.

Comparing platforms

The most extensive measurement programme on subway platforms to date has been carried out in the Barcelona subway system, where 30 stations with differing designs were studied under the frame of IMPROVE LIFE project with additional support from the AXA Research Fund.

It reveals substantial variations in particle-matter concentrations. The stations with just a single tunnel with one rail track separated from the platform by glass barrier systems showed on average half the concentration of such particles in comparison with conventional stations, which have no barrier between the platform and tracks. The use of air-conditioning has been shown to produce lower particle-matter concentrations inside carriages.

In trains where it is possible to open the windows, such as in Athens, concentrations can be shown generally to increase inside the train when passing through tunnels and more specifically when the train enters the tunnel at high speed.

According to their construction material, you may breath different kind of particles on various platforms worldwide. Image: London Tube/Wikimedia Commons.

Monitoring stations

Although there are no existing legal controls on air quality in the subway environment, research should be moving towards realistic methods of mitigating particle pollution. Our experience in the Barcelona subway system, with its considerable range of different station designs and operating ventilation systems, is that each platform has its own specific atmospheric micro environment.

To design solutions, one will need to take into account local conditions of each station. Only then can researchers assess the influences of pollution generated from moving train parts.

The ConversationSuch research is still growing and will increase as subway operating companies are now more aware about how cleaner air leads directly to better health for city commuters.

Fulvio Amato is a tenured scientist at the Spanish National Research CouncilTeresa Moreno is a tenured scientist at the Institute of Environmental Assessment and Water Research (IDAEA), Spanish Scientific Research Council CSIC.

This article was originally published on The Conversation. Read the original article.