Haptic Addition to a Visual Menu Selection Interface Controlled by an In-Vehicle Rotary Device

Table 2

Median and range of push errors and mental workload for each interface.

Interface	Push errors (%)		Mental workload
	Median	Range	Median	Range
V	2.78	13.89	736.50	891.00
pVH	1.39	8.33	682.75	441.50
fVH	4.17	11.76	635.75	683.50
H	10.13	36.11	678.25	595.00