Effects of In-Vehicle Navigation on Perceptual Responses and Driving Behaviours of Drivers at Tunnel Entrances: A Naturalistic Driving Study

Table 8

Evaluation results of the effectiveness of in-vehicle navigation.

Types	Indicators	Implication	Key Zone	Effective Zone	Effectiveness of in-vehicle navigation
Visual responses	The number of fixations	Driving information interaction	Zone 2	Zone 1, Zone 2	Valid
	The average duration of fixations	The difficulty of driving information cognition	Zone 4	Zone 1, Zone 2	Invalid
Psychological responses	R-R interval	Mental workload	Zone 3	All Zones	Valid
	SCR	Psychological arousal	Zone 3	Zone 2, Zone 3	Valid
Driving behaviours	Speed difference of zone	Speed coordination	Zone 2	Zone 1, Zone 2	Valid
	Maximum deceleration	Driving comfort	Zone 2	Zone 1	Invalid