Skip to main content

OSC2 Language Overview

OpenSCENARIO 2 (OSC2) is a scenario description language defined by the ASAM standard, used to describe traffic scenarios and test cases in autonomous driving simulations.

Scenario File Structure​

A typical OSC2 scenario file consists of import declarations, type definitions, entity declarations, and scenario definitions.

Basic Concepts​

  • Physical Quantities: OSC2 has a built-in complete physical quantity system supporting speed, distance, time, angle, and other physical quantities with units
  • Entities: Participants in the scenario, such as vehicles, pedestrians, etc.
  • Actions: Actions performed by entities, such as accelerating, changing lanes, etc.
  • Events: Sequences of events that occur in the scenario

Complete Example​

import std.base

scenario highway_merge:
    do serial:
        ego: vehicle with:
            speed: 72 km/h
            position: lane at(1, 0, 0) of Highway_1
        merge: vehicle with:
            speed: 54 km/h
            position: lane at(0, 0, 0) of Ramp_1
        parallel:
            ego.drive(duration: 10s)
            merge.change_lane(to: Highway_1, at: 5s)
Last updated on