Information Volume Threshold for Graphical Variable Message Signs Based on Drivers’ Visual Cognition Behavior

Table 3

Descriptive statistical results of drivers’ visual cognition behavior.

The numbers of roads	Auxiliary information (with/without)	Visual cognition time (milliseconds)		Visual cognition accuracy (%)	Comprehensibility accuracy (%)	General assessment		Information acceptance
		AVG	SD	AVG	AVG	AVG	SD	AVG	SD
3	Without	9012.76	4106.96	100.00	66.67	4.29	0.81	4.12	0.77
4	Without	11914.02	6122.68	100.00	69.05	4.19	0.86	4.12	0.89
5	Without	11649.98	5949.35	95.24	80.95	4.10	0.93	3.98	0.87
6	Without	16827.18	9273.63	97.62	61.90	3.74	1.06	3.55	1.06
7	Without	18902.88	13779.88	100.00	52.38	3.67	1.03	3.31	1.00
3	With	11239.76	5358.87	100.00	76.19	4.17	0.85	4.14	0.81
4	With	13540.21	6858.55	100.00	66.67	4.17	0.76	3.98	0.81
5	With	12509.71	5717.59	100.00	69.05	4.10	0.91	3.93	0.87
6	With	16899.31	9071.09	100.00	61.90	4.02	0.92	3.81	1.04
7	With	20222.60	11688.90	100.00	47.62	3.76	1.03	3.45	1.02