The effect of touch-key size on the usability of In-Vehicle Information Systems and driving safety during simulated driving
The effect of touch-key sizes on the usability of IVIS's and driving safety was experimentally investigated. Both the measurements for usability of IVISs and driving safety increased with increased touch-key sizes. However, the measurements for usability and driving safety reached an asymptote beyond certain touch-key sizes. The appropriated touch-key size considering both the usability and the safety was derived. Fitts law analysis was performed under dual-task (pointing task while simulated driving).
touch-key size in-vehicle information system touch-screen