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

Table 1

Basic information of subjects.

Gender	Number	Age		Driving experience		Professional driver	Amateur driver
		AVG	SD	AVG	SD
Male	29	38.9	11.8	10.4	5.7	17	12
Female	16	33.1	9.6	7.4	5.6	6	10
Total	45	36.8	11.6	12.8	10.5	23	22