The overall goal of the Vehicle Signal Specification (VSS) is to create a common understanding of vehicle signals in order to reach a “common language” independent of the protocol or serialisation format.

Please find the official documentation at: Vehicle Signal Specification

To use a specific version of VSS in your toolchain, head over to our releases page. The latest official release can be found here.

Work towards the next version is continuously ongoing in the master branch. To work with the specification directly, you need to clone this repository.

For more information on how to set up the development environment and to be able to transform source *.vspec files to other formats see our build guideline document and documentation in VSS-tools.

The community has regular calls to discuss topics around VSS. This includes specific tickets in this repository as well as the broader direction in which VSS is evolving. You can find current call coordinates and dates in our wiki.

For detailed information see our contribution guide!

Both VSS (this repository) and VSS-tools use a PEP inspired version scheme. Artifacts generated by the Makefile gets version from the file VERSION resulting in artifact names of the form vss_rel_<version>.<type-suffix> where <version> typically is X.Y or X.Y.Z for released versions and X.Y-dev for ongoing work in master-branch towards version X.Y.

Version is also visible in the Vehicle.vspec file where VersionVSS.Label typically is dev for ongoing work in master-branch and an empty string for released versions.

Versions are tagged in the form vX.Y(.Z) and the same syntax is used as names for VSS releases. VSS-tools is tagged but not released. For release candidates the form vX.YrcN is used. The rcN suffix is not used in VERSION and Vehicle.vspec files.

For more information on how versions are managed see the Release Instruction

VSS is an open standard and we invite anybody to contribute. Currently VSS contains - among others - significant contributions from

• Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
• Volvo Cars
• Jaguar Land Rover
• Robert Bosch GmbH
• Geotab Inc.