Characterizing Heterogeneity in Drivers’ Merging Maneuvers Using Two-Step Cluster Analysis

Table 1

Results of cluster analysis.

Parameters	Variables	Cluster 1	Cluster 2	Cluster 3	Cluster 4
proportion		33.6%	26%	24%	16.4%
mean	Initial Speed	14.547	10.481	13.427	16.768
	Merging Speed	14.186	9.478	9.950	15.613
	Merging Position	45.81	37.09	147.52	194.89
median	Initial Speed	14.167	10.936	13.576	16.663
	Merging Speed	14.082	10.104	10.525	14.921
	Merging Position	44.00	32.11	145.48	190.48
standard deviation	Initial Speed	1.566	2.035	2.069	1.763
	Merging Speed	1.630	2.366	2.511	2.943
	Merging Position	21.46	25.95	49.19	47.89
Skewness	Initial Speed	0.91			0.30
	Merging Speed	0.52			0.08
	Merging Position	0.68			0.79