Fact Sheet: Open Simulation Interface (OSI)

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Short Description/ Transmitted Information The Open Simulation Interface (OSI) defines an interface for the interconnection between the simulation environment and the automated driving functions in virtual scenarios
Application Scope Simulation based Engineering and Testing of automated driving functions, virtual and scenario based testing, sensor and environment simulation
Maturity Automotive-specific shaping
Goals Connect any automated driving function to any driving simulator, simplify and improve virtual testing
Penetration Individual expert teams
Visibility Approximately 10%
Promoting Bodies Projects of the PEGASUS family (PEGASUS, VVMethoden, SET Level), VDA Leitinitiative, ASAM, referenced in some ISO standards
Type ASAM standard (work-in-progress)
IT Standard Classification Interoperability Standard, Integration Standard
Data Format OSI uses the message format by Googles protocol buffers for structuring data
Relations to other standards - ASAM OpenScenario, OpenDRIVE
- ISO 23150 (standard for sensor output)
Overlap with other standards not known


Software Vendors

OSI Github

Industry Users

van Driesten, 2018: Overall Approach to standardize AD Sensor Interfaces, Simulation and Real Vehicle, Springer Verlag


https://www.hot.ei.tum.de/forschung/automotiveveroeffentlichungen/ Research Report at TUM

Positioning of OSI in V-Model


  • The Open Simulation Interface (OSI) defines an interface for the connection between the simulation environment and the automated driving functions in virtual scenarios.
  • Version 3.1.2 released Jan. 2019 of OSI was published as an Open Source Project on Github and was transferred to the ASAM association. The current version from ASAM is 3.2.0.
  • OSI uses the message format by Google's protocol buffers for structuring data
  • One message for the simulation environment interface (osi::GroundTruth), which describe the simulated objects in a global coordinate system
  • OSI since V3.0 distinguishes between Sensor View (osi::SensorView) and Sensor Data (osi::SensorData) as input and output of a sensor
  • Application areas are o automated and autonomous driving irtual scenarios based testing o sensor and environment simulation
  • Sensor data and ISO 23150 are harmonized. ISO 23150 is the standard for sensor output
  • Actual developments standardise e.g. commands for the control of further traffic participants within traffic scenarios (osi::TrafficCommand and osi::TrafficUpdate)

Relevance and Benefit for MBSE

Interoperability between Environmental Models, Scenarios, Systems under Test (SUT), and other Traffic Participants within simulations during runtime

Risks and Impediments

  • Naming convention: always talk about Open Simulation Interface, the abbreviation OSI is already used for the ISO 7-layer-model of interprocess communication
  • many stakeholders with different requirements
  • dependance on protocol buffers which don't guarantee performance in different programming languages and in all application areas