Guidebook on air pollution interdependencies for various stakeholders

The guidebook, prepared by the National Institute of Meteorology and Hydrology (NIMH) and Sofia Development Association, is a free tool for policy, research, education, industry and environmental bodies to understand the processes leading to undesired high levels of pollution in urban areas.

Best practice analysis on common global initiatives

This document, prepared by the National Association of Municipalities in the Republic of Bulgaria (NAMRB), contains a review of the trends in mobility solutions, related to the main innovation of INNOAIR, namely on-demand transport (with electric minibuses) combined with “mobility as a service” like technologies, low emission zones and congestion charging model.

Multi-stakeholder dialogue on air pollution interdependencies report

Air pollution in Sofia has long been a problem and despite recent positive developments, the city is still struggling to overcome this complex challenge. Air quality measures are interrelated and finding out how they affect each other will help optimize them faster.

Developing ideas for stimuli for citizens to switch to sustainable transportation - Co-creation Workshop Report

The transition to the use of urban and sustainable transport is a task that requires motivation not only from the institutions, but also from citizens and the business sector. In this regard, the Sofia Development Association, in partnership with Sofia Municipality, organized a co-creation design workshop on developing ideas for stimuli for citizens to switch to sustainable transportation with the participation of over 30 young and active citizens, business representatives and local institutions. The report presents the generated ideas and proposals, as well as the existing incentives.


А guide providing ideas and suggestions for empowerment to local authorities, universities and businesses how to lead the way for a local community that cares. The examples are based on participatory research and co-design process in Sofia.

Passenger behavior analysis

Passenger behavior analysis may be carried out from a different perspective, depending on the final goals and the available data. In this report we only cover some of the available options, focusing on those of them that are relevant for achieving the goals of INNOAIR project.

Modelling of traffic conjunction data and air pollution

Monitoring the concentrations of different compounds in the air over a period of time at different sites, archiving and assuring the quality of these data and their statistical analysis form the basis for air quality assessment in urban areas. The design of a particular air quality monitoring network is a complex task, that takes into account the objectives of the measurements (e.g. for policy development, for public information, for protection of vegetation, for identification of pollution sources etc.).

Benefit Dependency Network on "Green measures to tackle air pollution and climate change"

Benefit Dependency Network (BDN) is a schematic summary of the motives and benefits of a project. For the construction of a logical causal chain of program results, system vision, as well as for their visual presentation, a map of the benefits is needed. This map shows the composition and relationship between the different results of the program: project motivation, project implementation, changes, operational results, and benefits. This is a tool used in decision-making, focusing on benefits and their contribution to the strategic objectives.

Development of possible scenarios on cultural shift in transportation on air quality

The goal of this document is to consider and present scenarios for changes in the air quality caused by a potential reduction of non-environmentally friendly transport. The study focuses on the particulate matter with diameter < 10 μm (PM10).


First issue of the INNOAIR project newsletter

 In the first edition of the INNOAIR project newsletter, you will find not only information about the key developments in mobility in recent months, but also:
- Results and analysis of a survey on citizens' attitudes towards the transition to active transport.
-  Information on the introduction of low-emission zones in the capital.
- Opportunities for involvement in the creation of solutions for innovative urban mobility.

Second issue of the INNOAIR project newsletter

The INNOAIR newsletter updates you on what has happened in the last three months in the field of clean air and sustainable mobility in Sofia: new mobile services, needs and initiatives of people and businesses, R&D, research on human behavior in transport, opportunities to participate in taking decisions.

Third issue of the INNOAIR project newsletter

The INNOAIR newsletter shares with you how we contribute to smarter urban mobility and cleaner air in Sofia. We are happy to present the latest exciting solutions, initiatives and achievements in sustainable mobility in Sofia in the last three months. Stay informed!

Fourth issue of the INNOAIR project newsletter

 With the end of the year approaching, we are happy to inform you on some exciting events and publications that will help you enter 2022 full of inspiration. Not only have we achieved a range of interesting Sofia mobility and air quality developments, but we also started planning the 2022! We would love to hear from our community about your preferences for the second INNOAIR Hackathon so we can plan accordingly and would therefore appreciate your input in our 1-minute hackathon survey

Fifth issue of the INNOAIR project newsletter

 We showcase the latest innovations and news impacting the future of mobility.
Solutions, initiatives, events and achievements that challenge the citizens of Sofia to move more actively and sustainably, thus helping for cleaner air in the capital!
Don't forget that INNOAIR rewards those who use active transport through the SofiaCoin app, available for Android and iOS - it's not too late to join!


Data driven public transportation delay modelling

The article models delays in public transport, taking into account random factors and events that lead to disproportionately large changes in the schedule. 

Mixed data modelling of transportation and incidents

The article analyzes the possibilities for modeling transport systems, using sources of information of different nature, frequency and accuracy.


At the heart of the initiative INNOAIR is the implementation of on-demand public transport which operates in accordance with consumer demand. How would this happen from a technological point of view? The route of the electric buses will be determined by the requests of the citizens submitted through a mobile application, a part of the On-demand Public Transportation Platform (ODPTP). How does the platform work? See its demo version HERE.

INNOAIR CHALLENGE: Making urban mobility smarter PODCAST, hosted by Gereon Meyer (UIA Expert)

This podcast, hosted by Gereon Meyer (UIA expert) will give you an overview of the hackathon InnoAirChallenge: Making urban mobility smarter.
The hackathon is organized by Sofia Development Association and A1 Bulgaria and it was held online in the period 2-4 June 2021. 24 teams from 7 cities took part in a race for a cause. All participants worked online on the difficult task of developing and presenting projects that outline the vision of a future generation of transport services and connectivity that work for cleaner air in Sofia. Hear out their ideas!
The hackathon InnoAirChallenge: Making urban mobility smarter was the first of a number of hackathons and competitions that Sofia Development Association will organize within the INNOAIR project. 

Artificial Intelligence: Can smarter transit prevent Sofia from car overkill? – INNOAIR podcast, hosted by Gereon Meyer (UIA Expert)

This podcast, hosted by Gereon Meyer (UIA expert), will give you an overview of the opportunities and challenges of using artificial intelligence (AI) in managing sustainable on-demand mobility solutions in Sofia. Learn more about the upcoming emission-free mini buses, how AI is helping this service and what challenges it brings. Hear out what the INNOAIR team is sharing with you!