Crash Risk Prediction Model of Lane-Change Behavior on Approaching Intersections

Table 7

Final cluster centers and ANOVA.

Normalized items	Clustering center			Cluster		Error			Sig.
score	1	2	3	Mean square	df	Mean square	df
Questionnaire scores	−0.384	0.015	0.433	3.390	2	.957	110	3.544	.032
Response time accuracy	0.571	0.123	−1.222	17.742	2	.696	110	25.507	.000
Response time	0.261	−0.482	1.595	32.055	2	.435	110	73.626	.000
Speed estimation time error	0.671	−0.324	0.440	10.710	2	.823	110	13.006	.000
Driving force frequency	1.679	−0.339	−0.790	42.151	2	.252	110	167.399	.000
Braking frequency	1.527	−0.380	−0.431	33.668	2	.406	110	82.917	.000
Lane-changing frequency	0.790	−0.094	−0.634	11.105	2	.816	110	13.604	.000