Investigating the Affecting Factors of Speed Dispersion for Suburban Arterial Highways in Nanjing, China

Table 4

Rotated factor loadings for the EFA of candidate variables for and .

Variable	Latent influencing factors
	1	2	3	4	1	2	3	4
	Median	−0.007	−0.191	−0.012	0.92	0.308	−0.082	−0.258	0.787
Roadside environment	0.206	0.173	0.178	0.541	0.057	0.194	−0.061	0.775
Heavy vehicle mix rate	−0.263	−0.054	0.86	0.127	0.842	−0.05	−0.182	0.153
Traffic volume	−0.142	0.244	0.77	0.017	0.794	−0.131	0.191	−0.062
Average speed	−0.075	0.032	−0.72	0.096	−0.702	−0.343	0.176	−0.331
Headway	−0.155	−0.098	0.559	−0.27	0.875	−0.043	−0.177	0.148
Average lane changing rate	−0.026	0.034	0.858	−0.055	0.127	−0.073	0.856	−0.07
Right turn rate at access	0.88	−0.1	0.08	0.025	0.007	0.828	–0.046	−0.061
Left turn rate at access	0.78	−0.258	0.126	0.025	0.052	0.866	−0.088	0.09
Cross and turn around rate	0.675	0.254	0.119	0.011	0.105	0.794	0.028	0.101
Reverse driving rate	−0.091	0.794	−0.173	−0.108	−0.228	0.185	0.465	−0.01
Illegal parking rate	−0.206	0.873	0.097	0.102	0.322	0.003	0.648	−0.089
Nonmotor vehicle volume driving on the motor road	−0.015	0.737	0.092	0.25	−0.793	−0.021	0.281	−0.155