IAT for London
About project
Infrastructure Accessibility Index - IAT© highlights areas with spacious offer of services and easy pedestrian access to different types of infrastructure. IAT© is based on the "15-minute city" idea, which says that all facilities and services important for urban dwellers should be easily accessed within a 15-minute timeframe. We assess the infrastructure accessibility by surveying through the number of facilities reachable within 15 minutes on foot (walking accessibility), by car (transport accessibility) and by public transport.
To yield an open and data-driven approach to urban development NOVAYA created an Infrastructure Accessibility Tool© that helps evaluate the sufficiency and convenience of infrastructure for city residents. The main goal is to measure the provision of infrastructure and ecological situation in different parts of the city in order to identify priority areas for increasing or decreasing specific forms of development.

IAT© helps residents, city officials and businesses participate in city planning. Integration with existing urban planning processes enables a transition from opaque decision-making to a more open process with quantifiable results. This facilitates the transformation of fragmented development into balanced land-use and densities with a quality of life attuned to the needs of local citizens.
15-minute city
'15-minute city' is a post-car era vision for strategic urban development and management that gains more and more popularity these days. The idea focuses on mixing as many uses as possible within the same space. COVID-19 pandemic has ledbrought even more attention to the concept, because one of the main impacts it brings – the reduction of journeys to be made. This means that all facilities that are important to the people should be easily accessible within a short distance from home. The examples of its implementation can be found in Melbourne, Ottawa, Detroit and most recently Paris. Implementation of the '15 minute city' concept improves the daily life of city dwellers, as well as ecology and gives an opportunity to revitalize the urban space. Being a challenge for the real estate market with more area for commercial use in residential districts needed, it will affect the price level.

We use the '15-minute city' approach in our IAT© methodology to evaluate the infrastructure accessibility in a 15-minute walk. We also add that evaluation for other mobility types to compare the results and find potential problems and areas for improvement.
For residents, IAT© is a tool to make informed decisions about their life choices (assessing a place they live, deciding to move houses, moving into a new city) based on the accessibility of different types of infrastructure and attraction variety as well as air quality data.
IAT© helps to unveil areas with insufficient provision of services or poor connectivity thus helping city officials to move towards optimal urban policy utilizing minimal resources and to propose strategic solutions for specific territories with their unique drawbacks.
For developers IAT© offers an opportunity to assess brown-fields and select suitable areas for future development with the best infrastructure provision level. It also helps to minimize resources needed for construction, especially for utilities.

Based on our method for Izhevsk IAT©, the Infrastructure Accessibility Tool© for London is developing the approach further by distinguishing the infrastructure into three types (necessary, social and optional) and adding public transport infrastructure evaluation and ecological situation monitoring. We took the concept of three types of infrastructure from the Turku Urban Research Programme's Research Report "A Sense of Place", inspired by work of Jan Gehl. According to report, necessary services are most likely to host routine activities (e.g. schools, shops, grocery stores, etc.), optional are most likely host leisure activities (e.g. gyms, museums, spas, etc.) and social most likely host interpersonal activities (e.g. bars, cafés, clubs, etc.). We changed that classification slightly, leaving the core idea: we reclassified culture and leisure to as a social category and added business services to optional.

Air pollution was assessed for three components: NO2, Pm 10, PM 2.5, NO. These indicators were chosen due to the availability of official modeling data, strong health effect, presence of limits on the volume of pollution adopted in the UK. That pollutants chosen are ones which are known to have an effect on health within London and are able to be predicted with this model. We have identified areas of the city where the average air pollution exceeds the permissible concentration.
What IAT numbers mean?

0-20: Natural area with limited urban footprint, population count close to 0, air quality and overall ecological situation - good.

20-40: Rural green area, at the urban outskirts with detached and semi detached housing. Infrastructure in 15-minute accessibility is limited to grocery stores, day care and primary schools. Good ecological situation.

40-60: Suburban area with semi-detached housing, good transport network, a wider choice of service infrastructure within 15-minute access. Air quality and ecological situation is worsened by vehicle exhaust.

60-80: General Urban Area with mid- and high-rise multifunctional buildings, developed road network and public transportation, cultural, medical facilities, universities, open spaces etc are within 15-minute accessibility. Ecological situation is affected by vehicles and industry.

80-100: Central Urban area with dense high-rises, widest choice of services within 15-minute access. Limited access to open space, tight ecologic situation due to vehicle and industrial exhaust and urban heat island.
IAT© is instrumental in:

  • Balancing urban mix and promoting spatial equality by identifying current and future shortages of infrastructure provision;
  • Making the land and real estate market more transparent by publishing data on infrastructure accessibility;
  • Taking control over urban sprawl with planning permissions granted in areas with pre-existing favourable conditions and high infrastructure accessibility
  • Developing and monitoring strategic planning documents IAT© includes information on:
  1. Necessary facilities (schools, daycare, everyday shops and grocery stores),
  2. Social facilities (restaurants, culture and leisure facilities),
  3. Optional facilities (healthcare institutions, businesses, services, athletic facilities, public spaces),
  4. Utilities (capacity and/or cost of new engineering infrastructure.

IAT© can be tailored for:
  1. General public;
  2. Property developers and retail business;
  3. Planning, Transport, Land Registry and other National, Regional and Municipal Departments using GIS.
Data sources on necessary infrastructure
Data sources on social infrastructure
Data sources on optional infrastructure
Data sources on public transport and ecological situation
Let's talk
Tell us how we can help you
What Industry/Sector?