CityTwin is the digital model of your city, built from its own documents and data: strategies, the urban master plan, the mobility plan, the budget, indicators. The assistant is configured to answer from the sources built into the city model, to point to the documents it used and to flag anything the data cannot support. The material behind a decision or a funding application is ready in minutes, instead of weeks spent searching through documents.
This page is the English presentation of the product. The interface, the answers and the rest of the site are in Romanian. Versiunea în română.
An urban digital twin is a digital model of the city, built from its real data, that you can question and on which you can test decisions before taking them. CityTwin works in an environment dedicated to a single community, using documented data that carries its sources. It is meant for public administrations, urban planners and funding officers: anyone who needs decisions grounded in evidence rather than assumptions.
The assistant works on the community's data model: areas, projects, problems, indicators and sources. It is configured not to use information that the sources in the city model do not support.
Answers are limited to the community's data and domain. Where the model cannot support an answer, the assistant states that the data is missing.
Data provided by the institution and the resulting model can be exported in open formats, under the conditions agreed in the contract and in line with the licences of the sources used. Primary hosting and AI processing take place in the European Union, with data protection built in by design.
Generative models can produce plausible answers even when the information behind them is thin. CityTwin is designed to tie every answer to the sources built into the city model, so the answer can be verified before it is used in a council meeting, in a public document or in a funding application.
The answer cites the document, the map layer or the indicator it comes from. You go straight to the source and check it yourself.
What is missing from the data is stated as a gap, not invented. Anything the data cannot support is flagged and has to be verified before use.
What is measured, what is estimated and with what degree of certainty: all marked explicitly, with a confidence level. No false precision.
You get options and arguments with sources; the decision stays with the person. It does not replace the specialist, it prepares the ground for them.
The same public data, turned into time saved and decisions you can defend with documents.
You build the case for European or national funding on vulnerable areas, indicators and cited sources. You argue with figures and documents, not with stories.
Every answer comes with the source from the city's documents. You defend a project in front of the council with verifiable evidence, as support for the decision rather than a verdict.
You test the impact of an investment on the 3D map, a car park, a school, a transport stop, before you commit budget to it. For example: where to place a nursery so that it covers the largest number of children within a 15 minute walk, computed on the real street network.
Four connected stages, from collecting the data to analysing and presenting the results. It does not replace the specialists, it helps them see faster and more clearly.
We know what every administration fears when it signs with a software supplier: being tied to it and losing sight of its own data. With CityTwin it is simple. If one day you want to leave, you take everything with you, the model, the data, the history, in open formats. No obstacles, no negotiations.
The model is exported as an open JSON file with a public schema; the geographic layers inside it use standard GeoJSON, so they can be reused in any GIS. Data provided by the institution and the resulting model can be exported under the conditions agreed in the contract and in line with the licences of the sources used, with no proprietary formats to tie you to us.
Open standards, not a black box. Data and services stay interoperable, so that you do not depend on a single supplier for a critical piece of infrastructure.
Primary hosting and AI processing take place in the European Union. Some auxiliary technical services may operate globally, under the conditions described in the privacy policy. No advertising cookies, no profiling. Aligned with NIS2, maturing, with no claim of certification.
The public demo lets you explore the model built for Brasov directly: the 3D map, the thematic views (general, mobility, climate, safety, 15 minute access, energy, heritage), presentation mode and the basic functions of the investment simulator. The refresh frequency is stated separately for each data source. Advanced analysis, saving, comparison and reporting are available to partner institutions. The demo is not an official implementation by the Municipality of Brasov, and the interface and the answers are in Romanian.
Partner institutions get a CityTwin workspace dedicated to their community, configured on local data, documents and priorities.
You ask a question in plain language and get an answer with sources, assumptions and gaps stated explicitly.
You place investments on the map, 12 types from a nursery to a cooling point, and see which areas and which problems they cover, computed on the real street network through walking isochrones rather than a circle drawn around the point.
You save a simulation with a name and an objective, build another one and put them side by side. Scenarios stay on the city's server, not in someone's browser.
Trends and threshold warnings (WHO guidelines, EU limits) come out of the automatically updated series, with the calculation method written next to each signal. Climate forecasts are still under construction and are not delivered.
A report for the meeting file or for the funding application, with the sources indicated, plus export of the model as JSON with a public schema and GeoJSON layers.
Colleagues work in the same workspace, each with their own role and level of access.
The questions public administrations ask us most often, answered with what is already published on this site.
The city's own public documents and open data: the urban master plan, the mobility plan, strategies, the budget and indicators, plus open map geometry from OpenStreetMap. Climate and air quality series are refreshed daily, with the history kept and a monthly version archived. Coverage and accuracy grow as the city brings in more data.
Yes. The model is exported as open JSON with a public schema, and the geographic layers inside it use standard GeoJSON, so they can be reused in any GIS. Data provided by the institution and the resulting model can be exported under the conditions agreed in the contract and in line with the licences of the sources used. No proprietary formats that tie you to us.
Primary hosting and AI processing take place in the European Union. Some auxiliary technical services may operate globally, under the conditions described in the privacy policy. No advertising cookies and no profiling.
Each answer cites the document, map layer or indicator it comes from, so you can go straight to the source and verify it yourself. What is missing from the data is stated as a gap rather than invented, and what is measured is marked separately from what is estimated. CityTwin supports the reasoning behind a decision; the decision itself stays with the person who makes it.
The public demo built for Brasov: the 3D map, the thematic views, presentation mode and the basic functions of the investment simulator, with three investments placed and one simulation. AI analysis is closed in the demo. The interface and the answers are in Romanian.
A CityTwin workspace dedicated to their community, configured on local data, documents and priorities: AI analysis, the simulator without the demo limits, scenarios saved and compared with each other, Signals, report export and users with roles.
The basic public documents are enough to start: the urban master plan, strategies and the budget. After a request, we get in touch within three working days, go through your community's public data together with no commitment, and then send a concrete proposal: what the digital twin of your city would look like, the first report generated from its data and the conditions for access to the full version.
No. It is built from public data and documents about the municipality of Brasov and does not represent an official implementation by the Municipality of Brasov.
The Brasov model was built entirely from public data and documents about the city. We can start a pilot the same way for any community that has the basic documents: the urban master plan, strategies, the budget. Tell us about yours and we will get in touch within three working days.
Developed and operated by the Romanian Smart City Association (Asociația Română pentru Smart City), arsc.ro. Integral Business Center, Bd. Pipera nr. 1-IA, Voluntari, Ilfov, Romania. Phone: +40 31 425 42 63.