Application of Digital Twin and Parallel System in Automated Driving Testing

In the development and deployment of the connected and automated vehicles, testing and evaluation are essential. In the existing testing methods (simulation test, closed facility test and on-road test), closed facility test has many advantages: not requiring complicated dynamic modeling, safety, high controllability and easy to set the scenes. However, compared with the on-road test, the closed facility test lacks interaction with pedestrians and vehicles. Therefore, the digital twin technology can be used for the closed facility test, adding some virtual components to the real road environment, which are generated by the computer system. Combining the virtual environment with real road environment, is getting closer to the scenes in reality. This paper reviews the application of digital twin technology in the field of automated driving testing, summarizes the technical architecture and problems to be solved, to provides references for relevant researchers.