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Offerings
Built for European governments, operators, and the public interest.
Capabilities
Urban decision support
Simulate the city before you commit to it.
Deflux models the traffic, environmental, infrastructure, and population impact of proposed urban changes, so cities, port authorities, and the consultancies that advise them can compare scenarios before they spend.
The case
Cities make decisions with permanent consequences. A pedestrianisation. A low-emission zone. A new housing development. A bridge replacement. Each decision shifts traffic patterns, air quality, business activity, public transport ridership, and population distribution in ways that play out over years.
Most of these decisions are made with traffic counts from last quarter, demographic projections from the last census, and intuition about how the system will respond. Deflux gives planners a way to model the second-order effects before commitments are made, compare scenarios on shared metrics, and present defensible analysis to councils, citizens, and oversight bodies.
What Deflux models
Traffic and mobility
Vehicle flow, modal share shifts, congestion patterns, and journey-time changes across the affected network.
Environment
Air quality, noise, energy use, and emissions impact, including downstream effects beyond the immediate intervention zone.
Infrastructure
Pressure on transport networks, utilities, schools, hospitals, and public services from population and activity shifts.
Population and equity
Demographic effects, displacement risk, accessibility for vulnerable groups, and distributional outcomes across neighbourhoods.
Deflux's coastal and maritime extension, Estran, applies the same modelling approach to ports, coastal zones, and maritime spatial planning. See estran.3ops.io for the prototype.
Use cases
Pedestrianisation and LTNs
Model traffic displacement, business impact, and air quality changes before piloting a low-traffic neighbourhood or street closure.
Low-emission zones
Compare ULEZ-style zoning options on emissions, equity, and economic impact across affected populations.
Housing developments
Model infrastructure pressure, school capacity, transport demand, and demographic effects of proposed residential schemes.
Public transport changes
Simulate ridership impact, network effects, and modal shift from changes to bus routes, tram lines, or fare structures.
Climate adaptation
Assess flood risk, heat island effects, and green infrastructure benefits for resilience planning.
Industrial and port planning
Evaluate logistics, environmental, and community impact of port expansion, industrial zoning, or freight corridor changes.
How it works
01
Scope
Define the intervention area, the scenarios to compare, and the impact dimensions that matter for your decision.
02
Simulate
Deflux runs each scenario across the agreed dimensions, producing comparative outputs at neighbourhood and city-wide scales.
03
Decide
Your team receives a defensible comparison ready for council briefings, public consultation, and oversight reporting.
Methodology
Sources
Deflux ingests publicly available data, including census, traffic counts, environmental monitoring, transport networks, and building registers, and combines it with the planning data the city provides. Sources are documented per scenario, so the analysis is reproducible and auditable.
Models
The simulation combines established urban-modelling approaches with custom layers for second-order effects. Traffic uses macroscopic flow modelling. Environment uses dispersion and energy-use modelling. Population uses agent-based and statistical methods. Each layer is appropriate to the question being asked, not a one-size-fits-all engine.
Validation
Outputs are validated against historical interventions where comparable data exists. Confidence intervals are reported on every metric. Where uncertainty is high, the report says so. Deflux is built to support defensible decisions, which means being honest about what the simulation can and cannot tell you.
Transparency
Every report includes the source data, the assumptions made, and the limitations of the analysis. Cities receive the full methodology with every scenario, so the work can be reviewed by independent experts, opposition councillors, and the public.
Scenario comparison
Baseline
- Traffic—
- Emissions—
- Footfall—
- PM2.5—
Scenario A: Pedestrianised
- Traffic↓ 40%
- Emissions↓ 25%
- Footfall↑ 40%
- PM2.5↓ 25%
Scenario B: Modal filter
- Traffic↓ 25%
- Emissions↓ 10%
- Footfall↑ 10%
- PM2.5↓ 10%
Illustrative comparison. Specific outputs depend on city, intervention type, and the dimensions modelled.
Who Deflux serves
- Municipal governments
- Cities and towns making infrastructure, transport, environmental, and housing decisions with public funds.
- Regional and metropolitan authorities
- Bodies coordinating planning across multiple municipalities or at regional scale.
- Port authorities
- Through Estran, the coastal and maritime extension, for port expansion and coastal zone planning.
- Urban planning consultancies
- Firms advising public-sector clients who need simulation capability beyond what is in-house.
- National ministries
- Departments of transport, environment, and housing supporting local authorities or running national programmes.
Procurement and access
EU procurement. Deflux is available through standard EU public procurement procedures. We respond to RFPs, framework requests, and competitive dialogues directly.
G-Cloud (UK). A G-Cloud listing is in active onboarding for UK public-sector buyers, enabling streamlined procurement under the framework.
Pricing. Tiered by city size and the scope of analysis required. Pricing details are shared during initial consultation and structured to match standard municipal budgeting cycles.
Trust signals
EU data residencyHosted in Tallinn, EstoniaTriops Technologies OÜGDPR-native architectureMethodology published per scenario
Talk to our municipal team
Tell us about your city and the decision you're working on. We respond within five working days.