Dimensional Evolution of Intelligent Cars Human-Machine Interface considering Take-Over Performance and Drivers’ Perception on Urban Roads

Table 6

The paired sample t-test results of task completion time under the two HMIs with different dimensions.

Interaction modes of take-over tasks	The task completion time under the original dimensions (s)		The task completion time under the evolved dimensions (s)		t-value	Sig.
	Mean	Std. dev.	Mean	Std. dev.
A1	0.715	0.185	0.537	0.167	2.553	0.025
A2	0.657	0.181	0.637	0.186	1.151	0.272
B1	0.648	0.13	0.462	0.206	2.797	0.016
B2	0.736	0.106	0.571	0.124	3.116	0.009
C1	0.753	0.295	0.562	0.222	2.515	0.027
C2	0.667	0.226	0.522	0.176	1.999	0.069
C3	0.69	0.208	0.537	0.225	2.355	0.036