Replan SIM is an agent-based transport model built on MATSim: every person of a region is simulated with a daily plan, mode choice and route.
A transport model shows how traffic spreads over the network and how it reacts to measures. Classic transport modeling works with zones and matrices. Replan SIM works with people: each one plans a day on the real timetable and road network and decides again when service, fares or streets change. The result shows effects by group, time of day and district.
The four-step model works in four steps: trip generation, trip distribution, mode choice and assignment. The basic unit is the zone, the results are matrices and loads per link.
A synthetic population with age, household, income and car access. Every person chooses mode, route and departure time, and the simulation repeats this until the plans settle. MATSim in one minute
OpenStreetMap for roads, paths and footways.
GTFS for lines and departures, added to with your planning versions.
Census for residents and jobs, turned into a synthetic population.
MiD, SrV and Mikrozensus for trips, modes and daily schedules.
Passenger and traffic counts, ticketing data. No personal data is needed.
Existing traffic models are converted where suitable.
A first model of the region is built from open data in one working day.
Timetables, planning versions, counts and ticketing data are added in the first weeks.
Matched against counts, modal split and travel times, checked on cases your team knows. Every deviation is visible.
Change a line, a fare, a zone or a closure. Every person decides again, and the result comes as baseline against variant. Replan SIM
Boardings and alightings per stop, loads per section and link, transfers.
Modal split per scenario and the shift against the baseline.
Who gains and who pays, by income, age and district.
Effects over the whole day, per hour and time slice.
| Macroscopic model | Microsimulation | Replan SIM | |
|---|---|---|---|
| Model level | Macroscopic | Microscopic | Agent-based, mesoscopic traffic flow |
| Basic unit | Zones, matrices | Vehicles, pedestrians | People with a daily plan |
| Area | City, region, country | Junctions, corridors | City to region |
| Typical question | Network load, forecast | Capacity, traffic signals | How do people react to a measure? |
Typical model types, not single products. Replan SIM is built on MATSim (TU Berlin, ETH Zürich). Replan compared
MOIA (Hamburg), Klimaschutzrat Berlin, Netivei Ayalon (Israel), IZES (Saarbrücken) and HSU (Hamburg).
Calibrated against passenger counts, accepted on reference cases, peer-reviewed in Transportation Research Record 2025. Digital twin
A transport model represents who travels when, by which mode and where, and shows how this changes with a measure. It is the basis for network planning, local transport plans, forecasts and appraisals.
The four-step model calculates with zones and matrices and fits network load and forecasts. An agent-based model simulates every person with a daily plan and shows effects by group, time of day and district, for example for fares, zones or on-demand. Many teams use both. Replan compared →
Open data is enough to start: OpenStreetMap, GTFS, census, MiD, SrV and Mikrozensus. Your counts and ticketing data calibrate the model. No personal data is needed.
A first model of any German region is built in one working day. Your data and the calibration against counts, modal split and travel times follow within a few weeks. Digital twin for transport planning →
Yes. Existing traffic models are converted where suitable. Many teams keep their macroscopic model and use Replan SIM for questions about groups, time of day and behaviour. MATSim explained in one minute →
Get started
In 30 minutes we take one question from your region, a route, a fare or a zone, and show it in the model.
1. Data controller
Replan GmbH, Kurfürstendamm 195, 10707 Berlin. E-Mail: sales@replan.city.
2. Your rights
You have the right to access, rectify, erase and restrict your data. Contact sales@replan.city.