Complex or confusing interactions that require too much attention to accomplish can put all on the road at risk, and such systems require significant design effort and usability validation to avoid such issues.

• 复杂或者是令人费解的交互需要过多的注意力，因此可能会让路上行驶中驾驶员处于危险的境地。 因此这些系统的成功开发需要大量的设计工作以及可用性验证，才能避免这些问题。