Usability of Hierarchical Menu-driven Vehicle Touch Panel Display

Effect of Driving Task

Abstract

Investigations were made on the usability of hierarchical menu-driven vehicle touch panel display for multiple information system. The experiment to acquire one goal from sixty-four choices was performed for both with and without driving task using driving simulator. Tested menus are (breath^depth) 2^6, 4^3, 8^2 and 64^1. For the case of without driving task, usability of 8^2 is the best followed by 4^3. On the other hand, the goal acquisition time with driving task showed a decreasing difference between 8^2 and 4^3. Moreover, in considering subjective grading, 4^3 is the best closely followed by 8^2. Subjects feel 43 easier to use. This is mainly due to the ease of use in selecting the aimed sub-menu.