Addressing the Safety of Transportation Cyber-Physical Systems: Development and Validation of a Verbal Warning Utility Scale for Intelligent Transportation Systems

Table 2

Mean and standard deviation for demographic measures and Spearman correlation coefficient.

Variables	Mean (SD)	Spearman’s rho
Age (years)	21.13 (2.54)	−.01	.99
Gender (proportion of male)	0.75	.02	.63
Annual millage (miles)	8343.75 (6437.95)	.01	.81
License year (years)	3.50 (2.36)	−.01	.77
Reduced Kinetic Energy (J)	314.92 (152.09)	.56	<.001
VWUS total score	5.88 (2.51)