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“Vehicle Player” is a feature of SCANeR that allows a simulated vehicle to follow exactly a recorded trajectory.

In the User Manual: 5.5.10. Player model.

Vehicle Player uses its own data format. Data acquired from measurements or third-party software must be converted.

📄 Source data file📄📄📄 SCANeR Vehicle Player files

The source data contains the position of one or several vehicles over time.

The positions should be in the cartesian referential. Although it is possible to convert from geodesic to cartesian, as shown here.

This sample shows how to convert the source data using a Python script. The input format is XML, but the script can be adapted to take other formats as an input.

How to use the sample.


Step 1. Convert the vehicle trajectory data

The source data is in geodesic referential (lat, long). Let’s convert it to cartesian (x, y).

  1. Move to the workspace folder SCANeR-Samples-Pack-2022\APIs\samples\VehiclePlayer\ConvertFromXML.

    • The file example.xml contains test data exported from the third-party software PreScan.
    • The script can read, transform and save the data in the format of Vehicle Player.
    • The folder template/ is a dependency of the script.
  2. In a console (cmd), call the script Python example.xml

    Output files are in example_vhlplayer/.

Step 2. Use the vehicle trajectory data
  1. Place the converted files in the SCANeR data hierarchy.

    Data Hierarchy

  2. In SCANeR studio, load the configuration SAMPLE_2022_VEHICLE_PLAYER (how?).

Just to be sure, refresh the file index with menu TOOLS > Update resources.

     3. Create a new scenario menu FILE > New Scenario

Use the provided terrain example in the list.

     4. In the RESOURCES panel, look for the converted vehicle hostvehicle.


     5. Start the simulation

        The vehicle moves according to the input data.

The error below may appear in the log.

They are the result of a known bug, but they do not prevent correct simulation.

ERROR 1: PROJ: proj_create: unrecognized format / unknown name 
ERROR 6: Cannot find coordinate operations from `' to `EPSG:4326' 
ERROR 1: PROJ: proj_create: unrecognized format / unknown name 
ERROR 6: Cannot find coordinate operations from `EPSG:4326' to `' 

You can ignore those.

Explanation to make the sample your own.

Projection System

The source coordinates are in geodesic referential (lat, long). A projection allows to get them in cartesian referential (x, y).

Projection Schematic

The projection system depends on the region. In the script, the lines below must be changed according to your data location:

outProj=Proj(init='epsg:28992', towgs84='565.417,50.3319,465.552,-0.398957,0.343988,-1.8774,4.0725')
offsetX = 171338.11
offsetY = 388410.20

“EPSG” and “TOWGS84” codes can be found on


Both files under example_terrain/ contains the road network associated to the imported data.

  • example.osm is the source data.
  • example.rnd is the SCANeR Terrain after import of example.osm in the Terrain editor.

Go further

Multiple Vehicle Player instances

It is possible to import several vehicle trajectories. For example, if there is more than one vehicle trajectory in the input XML, the conversion script will produce several vehicle files. Once drag & dropped into your scenario, you’ll have them in the hierarchy.

Vehicle Hierarchy

Each vehicle will need its own ACQUISITION and MODELHANDLER modules.

Multiple Vehicles Modules

Finally, each vehicle instance can be linked to its dedicated modules in the Vehicle Instance Setup window.

  • Vehicle > Vehicle Process
  • Driver > Driver Process

Vehicle Process

Replay GUI

The Replay GUI is a SCANeR module that helps the use of Vehicle Player.

Replay GUI

In the User Manual: 7.13. ReplayGUI.


Need more help? Contact AVSimulation Support and find the best support option.


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