Identifying Factors Affecting the User Satisfaction of a Lane Keeping Assistance System

Abstract

The aim of this study is to identify and understand the factors affecting user satisfaction of a Lane Keeping Assistance System (LKAS). LKAS, which is a type of an Advanced Driver Assistance System (ADAS), helps drivers to keep the lane by engaging in the control of the steering wheel. When developing LKAS, the designers evaluate LKAS through objective measures relevant to the lane keeping performance, rather than driver’s subjective satisfaction. This approach cannot completely reflect the user satisfaction of LKAS. It is necessary to analyze and identify the factors affecting the user satisfaction of LKAS from the drivers’ viewpoint. In this study, the factors that may affect the user satisfaction of LKAS are extracted by surveying drivers who have LKAS experience. Based on the experience, participants rated and added comments for each factor extracted from the previous studies. The factors that significantly influence the user satisfaction of LKAS are found by a statistical analysis and discussed along with collected comments. The results imply that trust, non-intrusiveness, and confidence are the significant factors for the user satisfaction. The results of this study can provide useful insights when designing and improving LKAS.