A Behavioral Model of Drivers’ Mean Speed Influenced by Weather Conditions, Road Geometry, and Driver Characteristics Using a Driving Simulator Study

Table 12

SEM results for the latent variable “Sight Distance.”

Latent variable (exogenous variable)	Observed variable	Regression weight	Standard error	Standard regression weight	value
Sight Distance	Day and clear weather	1	—	0.52	—
	Day and heavy fog	−0.60	0.06	−0.32	0.001
	Night and heavy fog	−0.87	0.06	−0.45	0.001
	Mean speed	2.07	0.14	0.80	0.001