Transportation Research Group, Faculty of Engineering and Environment, University of Southampton, UK.
Ergonomics. 2011 Jul;54(7):609-25. doi: 10.1080/00140139.2011.586063.
In-vehicle information systems (IVIS) can be controlled by the user via direct or indirect input devices. In order to develop the next generation of usable IVIS, designers need to be able to evaluate and understand the usability issues associated with these two input types. The aim of this study was to investigate the effectiveness of a set of empirical usability evaluation methods for identifying important usability issues and distinguishing between the IVIS input devices. A number of usability issues were identified and their causal factors have been explored. These were related to the input type, the structure of the menu/tasks and hardware issues. In particular, the translation between inputs and on-screen actions and a lack of visual feedback for menu navigation resulted in lower levels of usability for the indirect device. This information will be useful in informing the design of new IVIS, with improved usability. STATEMENT OF RELEVANCE: This paper examines the use of empirical methods for distinguishing between direct and indirect IVIS input devices and identifying usability issues. Results have shown that the characteristics of indirect input devices produce more serious usability issues, compared with direct devices and can have a negative effect on the driver-vehicle interaction.
车载信息系统 (IVIS) 可以通过直接或间接输入设备由用户进行控制。为了开发下一代可用的 IVIS，设计人员需要能够评估和理解与这两种输入类型相关的可用性问题。本研究的目的是调查一组经验可用性评估方法的有效性，以识别重要的可用性问题并区分 IVIS 输入设备。确定了一些可用性问题，并探讨了其因果因素。这些问题与输入类型、菜单/任务的结构以及硬件问题有关。特别是，输入与屏幕上动作之间的转换以及菜单导航缺乏视觉反馈，导致间接设备的可用性降低。这些信息将有助于为新的 IVIS 设计提供信息，以提高可用性。相关性声明：本文探讨了使用经验方法区分直接和间接 IVIS 输入设备以及识别可用性问题的问题。结果表明，与直接设备相比，间接输入设备的特性会产生更严重的可用性问题，并会对驾驶员-车辆交互产生负面影响。
