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    • Fixed bug that was casing slightly exaggerated exit times to be shown when activating Show Link Items from the vehicle context menu. ticket2022
    • Fixed bug that made it impossible to modify numerical attributes (lane numbers, phase duration etc.) on some computers. ticket1966
    • Fixed bug that was causing unsafe internal junctions to be built. ticket2086, ticket2097
    • Fixed bug that was causing z-information to become corrupted. Thanks to Mirco Sturari for the patch.
    • Fixed bug where pedestrians never got the green light when loading a .net.xml file and adding pedestrian crossings.
    • Fixed bug where pedestrian walkingarea edges were missing. (This could cause invalid routes to be generated). ticket2060
    • Multiple connections from the same edge to the same target lane can now be set in post-processing (i.e. after removal of geometry-like nodes). ticket2066
    • Option --tls.guess-signals now respects option --tls.unset. ticket2093
    • Fixed invalid traffic light plans for networks with pedestrian crossings. ticket2095
    • Loading custom traffic light plans now correctly affects the building of internal junctions. ticket2098
    • Several fixes in regard to OpenDrive networks:
      • Added missing contactPoint attribute when writing OpenDrive networks.
      • Fixed geometry of lanes within intersections when writing OpenDrive networks.
      • Fixed geometry of lanes when importing imprecise OpenDrive networks ticket2085.
    • Option --street-sign-output now writes xsd-conforming output.
    • Fixed bugs that were causing invalid TLS plans to be generated for joined traffic lights. ticket2106, ticket2107
    • Fixed crash when importing OSM networks related to self-looping edges. ticket2135
    • Fixed bug that was causing invalid junction shapes and extremely large network boundaries. ticket2141
  • TraCI
    • Multiple fixes to the C++ TraCI library
      • commands gui.setScheme, gui.getScheme, inductionloop.getVehicleData
      • various set-commands were not consuming all result bytes and thus corrupted the message stream. Thanks to Alexander Weidinger for the patch. ticket2007
    • Fixes to TraaS functions Simulation_getDistance2D and Simulation_getDistanceRoad. ticket2127
    • Fixed crash when using vehicle.moveToVTD. ticket2129


  • Simulation
    • MESO and MESO#MESO-GUI are now open.
    • Can now simulated rail road crossings (see NETCONVERT enhancement below). Vehicles will get a red light whenever a train is approaching. ticket1744
    • Added option {{--emission-output.precision <INT>}} for configuring the numerical precision of vehicle emissions. ticket2108
  • TraCI
    • Added support for vehicle commands to the C++ TraCI library Thanks to Alexander Weidinger for the patch. ticket2008
    • Added new TraaS commands Edge.getLastStepPersonIDs, Person.getNextEdge, Vehicle.getRouteIndex, Vehicle.getStopState, Vehicle.isStopped and some more stop-related vehicle commands.
  • Tools
    • now handles controlled edges within a joined traffic light definition automatically.


Version 0.25.0 (07.12.2015)


  • Simulation
    • Fixed crashing and deadlocks when performing routing in the simulation based on districts. ticket1938
    • Fixed bug that was hindering lane-changes due to invalid cooperative speed adaptations. ticket1971
    • Fixed bug that was causing erratic lane changes when using subsecond simulation. ticket1440
    • Fixed bug that was causing erratic lane changes in front of intersections. ticket1856
    • Fixed right-of-way in regard to vehicles that were driving across the same intersection twice. ticket2023
    • Vehicles waiting to enter a roundabout no longer yield to other vehicles outside the roundabout. ticket1847
    • Pedestrians no longer walk past their specified arrival position. ticket1780
    • Fixed asymmetrical pedestrian behavior when walking to a busStop. Now they always walk to the middle of the busstop rather than to its endPos. ticket1562
    • Fixing crash when selecting Show all routes from the vehicle menu.
    • When loading a gui-settings-file from the View Settings dialog, the delay value is now correctly applied.
    • Fix bug that caused giant circles to appear when exaggerating the width of lanes with short geometry segments.
    • Vehicle names are now drawn for vehicles that occupy multiple edges. ticket1960
    • Fixed drawing of link indices, link rules, lane markings and bus stops for left-hand networks.
    • Fixed error when reloading a network with <param>-elements. ticket1979
    • Fixed missing connections in multi-modal networks. ticket1865
    • Fixed bug that caused invalid pedestrian crossings to be generated after importing a .net.xml file. ticket1907
    • Fixed bug that caused pedestrian crossings to change their priority when importing a .net.xml file. ticket1905
    • Fixed geometry bug when building pedestrian crossings and walkingareas for left-hand networks.
    • Fixed invalid network after deleting edges at a joined traffic light with controlled pedestrian crossing. ticket1902
    • Motorway ramps are no longer guessed if the lane permissions indicate that the edge is not a motorway. ticket1894
    • Motorway ramps are no longer guessed at roundabouts. ticket1890
    • Fixed some cases when roads where invalidly guessed to be roundabouts. ticket1933
    • When importing a .net.xml file the resulting network is no longer modified due to automatic joining of edges that connect the same nodes. ticket1930
    • When importing a .net.xml file with pedestrian crossings and setting option --no-internal-links, the crossings and walkingareas are removed from the resulting network. ticket1730
    • Several fixes in regard to OpenDrive networks:
    • Fixed crash when specifying inconsistent tllogic input. ticket2010
    • When patching an existing network with .nod.xml file, existing traffic light programs are now preserved unless changes are specified explicitly.
    • No longer patching loaded traffic light programs for new crossings if they already have the correct state size.
    • When importing a .net.xml which was built for left-hand traffic, the resulting network will also be built for left-hand traffic. ticket1880
    • When importing a .net.xml, generated networks will retain the same value of --junctions.corner-detail) as the input network. ticket1897
    • Fixed invalid geo-referencing in left-hand networks. ticket2020
    • Traffic lights that control multiple intersections no longer create unsafe right-of-way rules. The edges that lie within the traffic light are now controlled according to the appropriate right of way (This does not necessarily model physical traffic signals but reflects the behavior of drivers). ticket812
      • Old signal plans for these joined traffic lights no longer work for new networks since more link states need to be defined. The option --tls.uncontrolled-within <BOOL> was added to build networks that are compatible with old-style signal plans. Note, that this may create unsafe intersections, causing collisions.
    • When renaming an edge, the lane IDs are now updated as well. ticket1867
    • Fractional widths can now be set when inspecting edges.
    • Modifying traffic light plans which control multiple nodes is now working. ticket2009
    • Fixed invalid error when compiled without the FOX library. ticket1956
    • Loading of edge-scaling schemes from a gui-settings-file is now working.
    • The front of each vehicle queue is now drawn at the start of its segment.
  • Tools
    • no longer fails when encountering path names with space-charactes in them.
    • no longer nests output directories when generating multiple scenarios.


  • Simulation
    • Vehicle types now have vClass="passenger" by default. Earlier, the default was ignoring which would let the vehicles drive along footpaths and railways.
    • Zipper merging is now supported (see Netconvert enhancement below). ticket1292
    • Added person statistics to verbose output. ticket1898
    • Now warning about jammed pedestrians.
    • Now warning about pedestrians "collisions".
    • Now warning about traffic lights where one link never gets a green light.
    • It is now possible to modify the offset of an existing tls program without loading a completely new tlLogic-definition. ticket1940
    • Added option --duration-log.statistics <BOOL> which causes average vehicle trip data to be printed in verbose mode (average route length, travel time and time loss, ...) for quick evaluation of a scenario. ticket1911
    • The option --max-num-vehicles <INT> can now be used to maintain a constant number of vehicles in the network. Vehicle insertions are delayed whenever this number would be exceeded. Previously this option would terminate the simulation when the number was exceeded. To avoid a large number of delayed vehicles it is recommended to use the option --max-depart-delay <TIME>. ticket1958
    • Traffic detectors which are generated for actuated traffic lights now support additional parameters to allow writing output files the same way as regular detectors. ticket1839
    • Angles in simulation output and TraCI results now conform to Navigational Standards with 0 pointing towards the North and 90 pointing due East. ticket1372
    • Persons can now be tracked by selecting Start Tracking from the context menu. ticket1779
    • The current route of pedestrians can now be shown by selecting Show Current Route from the context menu. ticket1906
    • Error messages can now by clicked for jumping to the referenced simulation object (i.e. a teleporting vehicle). ticket900
    • Added person statistics to network parameter dialog. ticket1898
    • Added new menu option Edit->Open in Netedit for opening the current network (at the current location) in NETEDIT.
    • Added new option Copy edge name to clipboard to the lane popup-menu.
    • Added new options Close edge and Close lane to the lane popup-menu. This will force vehicles (with an assigned vClass) to wait until the corresponding lanes have been reopened (also via popup-menu).
    • Added new option Add rerouter to the lane popup-menu. This will make vehicles recompute their route when entering that edge.
    • The size and color of link indices can now be customized (old gui settings files may have to be updated).
    • Average trip data (for completed vehicle trips) is now available in the network parameter dialogue when running with option --duration-log.statistics.
    • Added new junction visualization option draw crossings/walkingareas. ticket1899
    • Vehicles can now be colored by depart delay (the differences between desired and actual depart time). Depart delay was also added to the vehicle parameter dialog. ticket1970
    • Junction shapes are no longer drawn when their color is set to fully transparent.
    • The network version is now shown the the network parameter dialog.
    • Zipper merging is now supported via the new node type zipper. ticket1292
    • Right-turn-on-red is now supported via the new node type traffic_light_right_on_red. ticket1287
    • Importing .inpx VISSIM networks is now supported. Thanks to the AIT for their contribution.
    • The positioning and presence of internal junctions can now be customized with the new connection attribute contPos. ticket2016
    • The maximum number of connections per junction was raised from 64 to 256.
    • Added options --geometry.remove.keep-edges.explicit <STRING> and --geometry.remove.keep-edges.input-file <FILE> to exclude edges from being modified when using option --geometry.remove. ticket1929
    • When specifying multiple connections from the same edge to the same target lane, safe right-of-way rules are now established among the conflicting connections. ticket1859
    • Added options --tls.cycle.time <TIME> to ensure that heuristically generated traffic light plans have a fixed cycle length. The new default is 90 (s) which will have no effect on most 4-arm intersections but will cause different timings for controlled 3-arm intersections and other types. ticket1942
    • Added options --edges.join <BOOL> to select whether edges that connect the same nodes (and have similar geometry) shall be joined into an edge with multiple lanes. The new default is false (before, this heuristic was always active). ticket1930
    • Street names are now imported form OpenDrive.
    • Now including sumo edge-ids in OpenDrive export if option --output.original-names is given (as <userData sumoId="sumo_edge_id"/>).
    • Now using more lane types in OpenDrive export.
    • Added option --default.junctions.radius <FLOAT> for setting the default radius of nodes. ticket1987
    • Added option --tls.left-green.time <TIME> to configure the default duration for the dedicated left-turn phase. A value of 0 disables building this phase. ticket1949
    • Added option --sidewalks.guess.exclude <STRING> to prevent guessing a sidewalk for the given list of edges.
    • Added option --junctions.internal-link-detail <INT> for setting the number of geometry points for lanes within intersections (Before, this was hard-coded as 5). ticket1988
    • Added option --crossings.guess.speed-threshold <FLOAT>. This allows setting the speed threshold above which crossings will not be generated at uncontrolled nodes (before this was hard-coded to 13.89m/s). ticket1819
    • Added option --fill <BOOL> to control whether polygons are filled by default or not. ticket1858
    • Added option --shapefile.fill <STRING> to override the fill state when importing shapefiles. Allowed values are [auto|true|false].
    • It is now possible to select individual vehicles, to examine their parameters, track them and show their route just like for SUMO-GUI. ticket1932
    • Vehicles can now be located as in SUMO-GUI. ticket1487
  • Tools
    • now supports exporting traces of persons when using the new option --persons <BOOL>.
    • Added option --ignore-gaps <BOOL> for When this is set vehicles will not be destroyed until the end of the fcd-file even when disappearing for a few simulation steps..
    • The import script is now more robust in finding a suitable output directory and recovering from errors.
    • Added new tool which coordinates traffic lights in a network for a given traffic demand in order to create green waves for many vehicles.
    • Connection objects from networks parsed via Sumolib can now return getTLLinkIndex as well as getJunctionIndex. ticket2048


    • Network version is now 0.25. New features that justify the version change are:
      • New linkstate Z and junction type zipper for zipper merging.
      • New junction type traffic_light_right_on_red. To accommodate this type of junction, linkstate 's' (stop) is now allowed in traffic light plans.
      • Multiple connections to the same lane do not result in a warning any more. (The conflict is resolved using zipper merging or priority right of way)
      • New network attributes lefthand, junctionCornerDetail and junctionLinkDetail
      • Note, that the network version should have been updated in 0.23.0 due to the introduction of ships but this was forgotten.
    • The visualization options Show internal edge name and Show crossing and walkingarea name were moved from the Streets-tab to the Junctions-tab.
  • Tools
  • Misc
    • start-commandline-bat now adds python (python 2.7 in it's default install location) and <SUMO_HOME>/tools to the path.
    • Simplified runner script of Tutorials/TraCI4Traffic_Lights

Version 0.24.0 (02.09.2015)


  • Simulation
    • Fixed default arrivalPos when loading <trip> or <flow> elements using attributes from, to directly into SUMO. ticket1739
    • Fixed crash when specifying consecutive walks for the same person. ticket1781
    • Fixed bug that caused pedestrians to get too close to each other. ticket1769
    • Fixed crash and other bugs when using option --lanechange.duration. ticket1152, ticket1795, ticket1796, ticket1797
    • Fixed bug that sometimes caused the rear end of vehicles to be placed on the wrong lane after lane-changing. ticket1804
    • Rerouters where closed edges are disabled for specific vehicle classes now cause these vehicles to wait until the closing ends if the destination edge is closed.
    • Vehicles with a <stop> in their route are now being overtaken if there is sufficient space. This was causing problems when modelling parked vehicles on a multi-lane road.
    • Fixed bug that resulted in invalid routes when routing at simulation time (at intersections where a required connection originates from a prohibited lane). ticket1861
    • Fixed centering of names on objects (a large mismatch was visible for persons).
    • Polygons are no longer drawn when setting their size-exaggeration to 0.
    • Custom car following model specification is now preserved in the route output. ticket1832
    • Fixed bug when using option --remove-loops where the start/destination edge changed needlessly.
    • Vehicles may now depart/arrive at any TAZ regardless of their vehicle class.
    • When adding crossings to a .net.xml without internal links, the output network will be built with internal links. ticket1729.
    • Fixed bug where duplicate crossings between the same pair of walkingareas where sometimes build when using option --crossings.guess. ticket1736
    • Fixed bugs where loading a .net.xml file and removing edges would lead to an invalid network. ticket1742,ticket1749,ticket1753
    • Permissions are no longer lost when guessing ramps. ticket1777
    • Defining pedestrian crossings at a node with type="traffic_light_unregulated" now works. ticket1813
    • Fixed invalid TLS-plans when loading a .net.xml file with TLS-controlled pedestrian crossings.
    • Connections between lanes with incompatible vehicle classes are no longer generated. ticket1630
    • Fixed generation of connections at intersections with dedicated bicycle lanes (symptoms were invalid connections and missing connections).
    • Modifying lane permissions in a network with crossings, so that crossings are no longer valid, is now working (invalid crossings are removed with a warning).
    • Fixed bug that caused invalid lane lengths when building with option --no-internal-links (near intersections with sharp angles).
    • Fixed some invalid clusters when using option --junctions.join.
  • TraCI
    • Fixed python API for function move to VTD (0xb4). ticket1720
    • Fixed subscriptions for <laneAreaDetector>
    • Vehicle command move to (0x5c) can now be used to forcefully insert vehicles which have not yet entered the network. ticket1809
    • Parking vehicles now return a reasonable position (and other values which do not depend on being on a lane). ticket1809
    • Fixed screenshots for Linux. ticket1341
    • The close command returns now a little later to have more data written to files (still not completely flushed though, see ticket1816)
    • Fixed bug where unselected objects were wrongly selected after undoing deletion.
    • No longer creating invalid network when loading and saving a network with split crossings.
  • Tools
  • All Applications
    • Fixed invalid paths when using option --output-prefix <STRING> and loading a configuration file in a subdirectory. ticket1793


  • Simulation
    • Simulation of electric vehicles is now supported with a new model for energy consumption and battery charging.
    • Maximum time that may be simulated increased from 24 days to 290 million years. ticket1728
    • <walk>-definitions now support departPos="random" and arrivalPos="random".
    • --fcd-output now includes z-data if the network has elevation. ticket1751
    • <vTypeProbe> output now includes z-data if the network has elevation.
    • Device assignment by <param> can now be used to override device assignment by option --device.<DEVICENAME>.probability.
    • Added new vType-attribute carFollowModel which can be used instead of a child element when declearing the car following model. ticket663
    • Vehicles which do not have a route and cannot find one on insertion get discarded when --ignore-route-errors is given. ticket1825
    • --vehroute-output now includes the route length. ticket1790
    • The view can now be moved and zoomed via keyboard shortcuts. ticket298
    • Lanes which disallow passenger cars (i.e. paths and service roads) now have a distinct shade of grey. The color can be customized in the gui-settings dialog.
    • Vehicles now activate their blinker during continuous lane change manoeuvres.
    • The types of POIs and Polygons can now be displayed via View Settings. ticket1803
    • The personNumber,containerNumber,personCapacity,containerCapacity information for a vehicle is now shown in the parameter dialog. ticket1617
    • The GUI asks at simulation end whether all files and windows should be closed
    • added option --remove-edges.input-file <FILE> which works as an analogue to --keep-edges.input-file. Giving either option a selection file (where edge ids are prefixed with edge: as argument is now supported.
    • added option --ramps.unset <STRING> which works as an analogue to --ramps.set and prevents edges from being treated as on- or off-ramps. ticket1763
    • Now importing signalized pedestrian crossings from OSM (<tag k="crossing" v="traffic_signals"/>).
    • added new option --default.junctions.keep-clear <BOOL> and new attributes <node keepClear="..."/> <connection keepClear="..."/> for allowing drivers to drive onto an intersection despite the risk of blocking it for cross-traffic. ticket1290
    • pedestrian crossings may be removed using the new attribute discard.
    • when splitting an edge, the new node is not removed by option --geometry.remove even when speed and lane count remain unchanged. ticket1842
    • Connections from and to sidewalks are only generated when also building pedestrian crossings since they are superfluous otherwise. When using pedestrian model nonInteracting these connections are not used (pedestrians jump across intersections between any two sidewalks) and when using model striping, crossings are mandatory.
    • Bicycle lanes are now imported from OSM (when using the appropriate typemap). ticket1289
    • Bus lanes are now imported from OSM. ticket1682
    • Improved control over edge types (typemaps) when importing from OSM. All defaults can now be overridden in a transparent manner and it's easier to add additional modes of traffic than ever before (see documentation).
    • Option --lefthand now works for generating networks with left-hand traffic. Thansk to Andrea Fuksova for suggesting the double-mirroring technique.
    • Edge types can now be used to define vClass-specific speed limits. ticket1800
    • Additional attributes are now supported to specify the node that is generated when splitting an edge. ticket1843
    • option --ignore-errors now also applies if no input trips/routes are loaded.
    • Added option --bulk-routing <BOOL> to improve routing speed when many (similar) vehicles depart at the same time from the same location. The time aggregation can be controlled using option --route-steps <TIME> The bulkstar routing algorithm is now obsolete and no longer supported. ticket1792
    • Added options --repair.from <BOOL>, <BOOL> which attempts to repair invalid source or destination edges in the route input.
  • TraCI
    • When importing OSM data, POIs are now raised above the layer of polygons and roads by default to make them always visible. ticket1771
    • Added option --poi-layer-offset <FLOAT> to control the layer of pois relative to polygons (especially in cases where they have the same type).
    • --offset <FLOAT> options are now respeced even when used together with a network.
    • The view can now be moved and zoomed via keyboard shortcuts.
    • Added menu option for replacing junctions by geometry points. ticket1754
    • Geometry points of parallel edges can now be moved simultaneously when both edges are selected.
    • option --gui-settings-file is now supported.
    • can now choose only differing sources and sinks ticket1837
  • Tools
    • made aware of vClasses (and use the sumolib for parsing)
    • added option --binomial <INT> for achieving binomially distributed arrival rates.
    • added option --validate <BOOL> for generating trips with validated connectivity. ticket1783
    • now supports attributes for <person> and <walk> definitions when using option --trip-attributes.
    • now supports discovering reverse connectivity by using option --destination
    • now supports edge permissions by using option --vclass
    • now supports writing an edge selecting for every (weakly) connected component when using option --selection-output
    • now outputs additional statistics in regard to the disconnected components. Thanks to Gregory Albiston for the patch.
    • added new tool for visualizing districts.
    • added new tool for creating an edge selection from a route file.
    • added new tool for comparing two traffic scenarios via their edgeData output.
    • now supports multiple definitions in a single input file. Thanks to Thomas Lockhart for the patch.
    • OSM-scenario-generator script now supports additional modes of traffic.
    • now supports filtering to a bounding box. ticket1774


  • Scenarios
  • Documentation
  • TraCI
    • TraCI version is now 10
    • The named constant traci.vehicle.DEPART_MAX is now named traci.vehicle.DEPART_SPEED_MAX. This corresponds to <vehicle departSpeed="max" .../>.
  • Tools
    • GDAL 2.0 is now supported. Thanks to Thomas Lockhart for the patch.
    • and no longer use option --geometry.remove-isolated to avoid removing rivers and railways.
  • Misc
    • The scripts and moved from <SUMO_HOME>/tools/trip to <SUMO_HOME>/tools
    • The OSM typemaps now disallow vClass tram and ship where appropriate
    • The tool sumoplayer has been removed because it became obsolete with the introduction of --fcd-output and ticket1651
    • The Win64 binaries no longer have a 64 suffix.
    • Error reporting on opening files got a little more verbose.
    • Whitespace in filenames is handled a little bit better

Older Versions

















pre 0.8.x