It is hard to test vehicle applications in the real world, due to bulky hardware and complex signals. Hence developers can leverage VSS signals to replicate a lot of real world scenarios for their applications. Denso's vehicle application platform QUAD empowers third party developers to build vehicle applications using a Digital twin (DUO) that stores data in VSS format. Some examples of such third party applications include micro-collision-detector, speed-collector and accident-video-uploader. Developers can also access tools like signal simulator (Quad-simulator) and app debug terminal (Quad-terminal) to build and debug applications seamlessly. It allows them to assess the performance, functionality, and reliability of their applications before deploying them in the actual physical environment.