SUMO - Simulation of Urban Mobility

Basic Information



Latest update


Free of charge

Application time

Weeks to months depending on project scope

Assistance required

Most users rely on the available manual; Advanced Questions are answered on a public mailing list; Workshops and Training are provided on demand

Assistance data

Traffic networks, Traffic counts, Origin-Destination-Matrix, Traffic light plans

Tool type


Application area

  • Other

Target Audience

  • Other


Traffic simulations facilitate the evaluation of infrastructure changes as well as policy changes before they are implemented on the road. For example, the effectiveness of environmental zones or traffic light control algorithms can be tested and optimised in a simulation before being deployed in the real world.

SUMO (Simulation of Urban MObility) is a free, open, microscopic and continuous road traffic simulation suite designed to handle large road networks. It allows modelling of intermodal traffic systems including road vehicles, public transport and pedestrians. SUMO includes a wealth of supporting tools, which handle tasks such as route finding, visualisation, network import and emission calculation. SUMO can be enhanced with custom models and provides various APIs to remotely control the simulation.

SUMO offers various features such as:

  • Microscopic simulation
  • Online interaction
  • Multimodal simulation incl. vehicles, public transport, pedestrians
  • Automatic generation of time schedules of traffic lights
  • No limitations in network size and number of simulated vehicles
  • Evaluation of eco-aware routing based on pollutant emission and investigations of autonomous route choice on the overall network

SUMO supports the import formats OpenStreetMap, VISUM, VISSIM and NavTeq.

SUMO is implemented in C++ and uses only portable libraries.

The SUMO package contains a number of different applications. See for details.

Good Example

  • Analysis and simulation of traffic management actions for traffic emission reduction (
  • Traffic forecasts for the City of Cologne during the Pope’s visit in 2005 and during the Soccer World Cup 2006.
  • Simulation of in-vehicle telephone behaviour for evaluating the performance of GSM-based traffic surveillance.
  • Usage by the V2X community for realistic vehicle traces and to evaluate applications in an on-line loop with a network simulator.
  • Vehicle-Actuated Intelligent Traffic Signal Control (  
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