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INNOAIR — On-Demand AI Electric Transit for Cleaner Air
Bulgaria · Sofia · See the Bulgaria profile · See the Sofia profile
Evidence: Descriptive / self-reported Top 29% 76/100 · Ask Evidence Copilot about this practice
AI-dispatched electric minibuses piloted in Manastirski Livadi, Sofia, scaled to 3 more neighbourhoods post-project; green corridors, congestion charges and low-emission zones complemented the pilot and influenced citywide clean-air policy after the EU phase closed June 2023.
5 vehicles
Electric minibus fleet size (2020-2023)
4 neighbourhoods
Neighbourhoods served after post-pilot expansion (as of 2023)
70+ authorities
Authorities attending dissemination events (2020-2023)
Details
- Maturity
- Scaling
- Promoter
- Municipality of Sofia / Sofia Development Association
- Period
- 2020–2023
- Region (NUTS)
BG41- Keywords
- Urban mobility / Clean air
Context
INNOAIR (UIA05-202) was a Sofia municipal project co-financed by the European Regional Development Fund through the EU's Urban Innovative Actions initiative, running from July 2020 to June 2023 under a public-private consortium led by the Municipality of Sofia and the Sofia Development Association.
Objectives
The project set out to cut road-transport emissions in Sofia through four combined measures: an AI-dispatched on-demand electric transit service, green mobility corridors, a congestion-charge pilot, and preparatory modelling for low-emission zones.
Activities
A fleet of five electric minibuses served the suburban Manastirski Livadi area using a smartphone app and machine-learning routing that dynamically combined passenger requests into efficient shared trips, replacing fixed-schedule diesel buses. The project also piloted green corridors and a congestion charge, and hosted dissemination events attended by more than 70 local and regional authorities.
Results
After EU co-financing ended in June 2023, the Municipality of Sofia extended the on-demand electric-bus service to three further neighbourhoods — Malinova Dolina, Vitosha and Gorna Banya — funding it from the municipal budget alone. The groundwork from the project also fed into Sofia's phased rollout of low-emission zones through 2025.
Conclusions
INNOAIR shows an EU-funded urban-mobility pilot transitioning into a self-funded municipal service, though no passenger-count or emissions-reduction figures have been published to quantify its environmental impact.
Implementation
- Indicative cost
- Medium (€50k–€500k) — EU ERDF co-financed pilot delivered through the Urban Innovative Actions programme; specific budget figures are not stated in the source content.
- Time to results
- Medium (1–3 years) — Three-year EU-funded pilot (July 2020-June 2023), followed by a municipally funded expansion to three further neighbourhoods completed within about four months of project closure.
- Staffing & skills
- Public-private consortium led by the Municipality of Sofia and the Sofia Development Association, Mobility-technology provider operating the AI dispatch/routing app (not named in source)
Conditions for success
- Suburban area lacking metro access created clear demand for on-demand transit
- Smartphone-app-based dynamic routing enabled flexible, efficient dispatch
- EU (ERDF/UIA) co-financing covered the initial pilot phase
- Municipal willingness to fund continuation after EU financing ended
Where it fits
- Governance type
- municipal government with EU co-financing
- Scale
- city/neighbourhood
- Income level
- upper-middle-income
Commonly funded by
National / regional programmes LIFE Programme Horizon Europe
Indicative funding routes for practices of this type — always check each programme's current calls and eligibility rules.
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Data sources
Where this practice's information was retrieved from, and when.
- C-NAPSE web research — accessed 2026-06-21
- Municipality of Sofia / Sofia Development Association — accessed 2026-06-21
- INNOAIR official project website — accessed 2026-06-21
- UIA / EU Urban Innovative Actions project page — accessed 2026-06-21
- Springer – AI-Driven Adaptive Scheduling for On-Demand Transit — accessed 2026-06-21
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