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Eclipse SUMO is a highly portable, microscopic and continuous road trafficsimulation tool. It is designed to handle large road networks faster than real-time and simulates each vehicleindividually.

Welcome to Eclipse SUMO (Simulation of Urban MObility), an open source, highly portable, microscopic and continuous multi-modal traffic simulation package designed to handle large networks. SUMO 1.10.0 for Windows 64bits. Sources All-inclusive-tarball Windows Linux macOS. Latest Development Version (Nightly Snapshots).

1. 'Simulation of Urban MObility' (SUMO) ( is an open source, highly portable, microscopic traffic simulation package designed to handle large road networks and different modes of transport. It is mainly developed by employees of the Institute of Transportation Systems at the German Aerospace Center.
2. (1) Example code for route file (https://sumo.dlr.de/docs/DefinitionofVehicles,VehicleTypes,andRoutes.html).

Installation

Download the SUMO binary bundle or installer from the SUMO website. Linux users may build SUMO from the source code.Depending on the distribution, it is even possible to install SUMO as package from a software repository.Please refer to the SUMO Wiki for further information.

Welcome to Eclipse SUMO (Simulation of Urban MObility), an open source, highly portable, microscopic and continuous multi-modal traffic simulation package designed to handle large networks. SUMO 1.10.0 for Windows 64bits. Sources All-inclusive-tarball Windows Linux macOS. Latest Development Version (Nightly Snapshots).

1. 'Simulation of Urban MObility' (SUMO) ( is an open source, highly portable, microscopic traffic simulation package designed to handle large road networks and different modes of transport. It is mainly developed by employees of the Institute of Transportation Systems at the German Aerospace Center.
2. (1) Example code for route file (https://sumo.dlr.de/docs/DefinitionofVehicles,VehicleTypes,andRoutes.html).

Installation

Download the SUMO binary bundle or installer from the SUMO website. Linux users may build SUMO from the source code.Depending on the distribution, it is even possible to install SUMO as package from a software repository.Please refer to the SUMO Wiki for further information.

In order to run SUMO with Eclipse MOSAIC you need to make the SUMO binaries available system wide by adding the SUMObinary folder to yourPATH environment variable. Alternatively, the environment variable SUMO_HOME can be used todefine the installation directory of SUMO.

We recommend using the 64 bit version of SUMO if you want to simulate scenarios with large traffic networks.

Configuration

The SUMO ambassador can be configured with a configuration file. The specific path is /sumo/sumo_config.json.If no such file exists, the following default configuration options are used:

Read the detailed documentation of the SUMO Configuration.

Next to sumo_config.json, the following configuration files are required for every SUMO simulation scenario:

The SUMO configuration consists of sumo specific config files and the sumo-ambassador configurationfile. The main configuration file name must end with the suffix *.sumocfg, which needs to refer to the network.The network file is mandatory and can be generated with the scenario-convert tool provided with Eclipse MOSAIC.

When you are coming from SUMO you might notice the missing route file (*.rou.xml). This is because with Eclipse MOSAIC,the traffic definition (definition of vehicles, flows, vehicle types) is usually part of the Mapping configuration file. Routesusually are defined in the Application database. You can however add route files to your scenario and mosaic will handleall vehicles in coherence.

Vehicle related parameters, such as acceleration, maximum speed, and the like, are configured via the Mapping configuration file. However,some SUMO specific parameters, like the car following model can only be configured in the sumo_config.json. For example, if you haveconfigured a vehicle type called MyVehicle in the Mapping configuration, you can set specific parameters for this type as following:

Further information about SUMO and its configuration can be found in the official SUMO wiki.

Using the SUMO GUI with Eclipse MOSAIC

It is also possible to use the graphical interface of SUMO in order to visualize and interact with the simulation.Toachieve this, Eclipse MOSAIC can be configured to start the GUI process of SUMO as the federate rather than thecommandline interface.

In order to use the SUMO GUI the file /etc/runtime.json needs to be edited.Here, the entryorg.eclipse.mosaic.fed.sumo.ambassador.SumoAmbassador must bereplaced withorg.eclipse.mosaic.fed.sumo.ambassador.SumoGuiAmbassador.

Keep in mind to launch Eclipse MOSAIC with the argument -w 0 in order to disable the watchdog timer.Otherwise, itwould shut down Eclipse MOSAIC if the simulation is paused in the SUMO GUI.

Using LibSumo with Eclipse MOSAIC

The coupling between MOSAIC and SUMO is implemented in two ways. The default implementation usesa socket-based API provided by SUMO, short TraCI. This interface has been well-established over the recent yearsand integrates very well with MOSAIC. The main disadvantage of this method is, that it uses a socket totransmit all the simulation data from SUMO to MOSAIC, even if SUMO runs on the very same machine. Thismay result in a bottleneck and slows down the simulation especially for large-scale scenarios.

To overcome this, there is a second method to couple SUMO and MOSAIC with each other. This integratesSUMO as a dynamic linked library into MOSAIC, which results in a much faster data exchange. In orderto get this running, you need to follow these steps:

• Make sure SUMO_HOME environment variable is set correctly to your SUMO installation.
• Check, if there's a bin/libsumojni.dll or bin/liblibsumojni.so file in your SUMO installation directory. If not, you mightneed to install the 'extras' release bundle of SUMO (Windows), or you need to re-build SUMO from sources and activatethe build of libsumo (see https://sumo.dlr.de/docs/Libsumo.html#building_it).
• Only the recent SUMO version (1.10.0) is supported.

If these pre-requisites are met, you can activate this feature editing the file /etc/runtime.json.Here, the entryorg.eclipse.mosaic.fed.sumo.ambassador.SumoAmbassador must bereplaced withorg.eclipse.mosaic.fed.sumo.ambassador.LibSumoAmbassador.

Please be aware that this feature is still experimental. Also, some SUMO commands are not yet supported(retrieving leader information, partly missing information about traffic lights and induction loops).

Adding Vehicles

The SumoAmbassador handles vehicles added via Mapping (mapping vehicles) and via SUMO route files (sumo vehicles).There are however some caveats: Adobe dreamweaver 2020 v20 1.

• mapping vehicles can drive on routes specified in route files, however sumo vehicles can't drive on routes specified in the scenariodatabase
• you can only map applications on sumo vehicles' vehicle types, however you can work around this limitation by usingdifferent vehicle types for different applications
• Stay away from giving your sumo vehicles the prefix veh_ since this will most likely lead to your simulation crashing, becauseMOSAIC uses this as a prefix internally
• The vehicle types defined in Mapping and defined in route files can't share the same names

This duality of adding vehicles has some powerful use cases. For example, you can use an existing SUMO scenario and add your owntraffic via MOSAIC and equip all vehicles with applications.

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Deep dive: Route Files / Additional Files

In SUMO the route files (<.>.rou.xml) fulfill three main purposes supported by Eclipse MOSAIC:

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1. Define vehicle types.
2. Define routes for vehicles.
3. Define vehicle departures to spawn vehicles with defined types (1.) on defined routes (2.)

Yate client. These definitions can also be done in additional files (<..>.add.xml).

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Route and vehicle departure definitions can also be handled by SUMO's Traffic Control Interface (TraCI), which is alsothe way Eclipse MOSAIC adds them to the simulation. This has the advantage that it can be done at runtime leading to a smaller overheadbefore simulation start. Vehicle types however have to be defined in a route file, or an additional file before simulation start,additional files have the advantage, that they are loaded before route files, which is helpful for our use case.We write a new additional file (mosaic_types.add.xml), which contains types specified in Mapping and merges themwith the aforementioned additionalVehicleTypeParameters (Note: these are not validated in any form). The image below showsa schematic view of how the configuration files and RTI components interact with each other.