A collaborative study conducted by the University of Washington and the Toyota Research Institute has unveiled that engaging with in-vehicle touch screen devices during driving can significantly divert drivers' attention and elevate driving hazards. Through meticulously designed, highly realistic simulation tests, the research uncovered that using touch screens while driving can result in a more than 40% surge in lane deviation. Furthermore, it can diminish operational accuracy and speed by over 58%, and prolong reaction time by 57%. These effects markedly outweigh those caused by drunk driving or driving under the influence of drugs. The study strongly advises automakers to streamline the menu hierarchy for frequently used functions, enhance intelligent prediction capabilities, and incorporate load-sensing systems. Additionally, it underscores that the design of in-vehicle interactions should be tailored to drivers' real-world habits, rather than adhering to manufacturers' idealized settings.