The work aims to provide guidance for the design of external human-machine interfaces for automated ve-hicles through the research and practice of external human-machine interfaces design for automated vehicles. Starting from the literature research, the case study of the design of external human-computer interaction interface was used to analyze the design of external human-computer interaction interface of Yushi technology “urban mobile suitcase”, Baidu-hongqi L4 autonomous passenger car, Semcon smile concept car and Mercedes-benz F015 concept car and the design elements of external human-machine interfaces for the automated vehicles were summarized, including key elements of location, technique, text, graphics, color, personification. Through the design practice and assessment, linguistic material analysis and other methods were applied to summarize the relevant design points of the external human-machine interfaces for the automated vehicles. The design points of the external human-machine interfaces for the automated vehicles, namely the simple clarity, familiarity, consistency, and interactive comfort, have important guiding significance for the design practice. This research and practice can provide road users with an available external human-machine interfaces. |