How does road marking in horizontal curves influence driving behaviour?

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Table 3 Sample sizes (n) and descriptive characteristics of average speed and lateral position data

Indicator	Road marking	Curve direction	Measure-ment period	Profile number	n	Min.	Max.	Mean	Std. Dev.
Average speeds [km/h]	Edgelines	Left	Before	N/A	2024	38.30	99.00	65.92	9.91
		Left	After		1651	36.60	100.80	65.68	11.06
		Right	Before		1164	39.10	92.80	68.31	9.61
		Right	After		1075	38.00	96.70	64.16	9.63
	Centreline	Left	Before		2056	29.80	82.60	61.08	7.98
		Left	After		1058	34.00	81.10	53.92	7.42
		Right	Before		1811	28.60	83.10	58.89	9.64
		Right	After		1142	29.10	82.30	53.88	8.14
Lateral positions [m]	Edgelines	Left	Before	1	2246	0.24	4.76	2.21	0.66
				2	2477	0.08	4.77	2.70	0.80
				3	2156	0.25	4.77	2.53	0.82
			After	1	1893	0.26	4.44	2.15	0.58
				2	2116	0.29	4.51	2.65	0.74
				3	1652	0.25	4.50	2.57	0.69
		Right	Before	1	1954	1.51	5.89	3.76	0.65
				2	2204	1.72	6.38	4.53	0.83
				3	1486	1.73	5.88	4.71	0.67
			After	1	1556	1.91	5.25	3.53	0.45
				2	1708	1.97	5.49	4.31	0.57
				3	1281	2.11	5.78	4.30	0.55
	Centreline	Left	Before	1	2977	1.08	3.93	2.89	0.47
				2	2752	1.05	3.92	2.44	0.52
				3	2187	1.03	3.82	2.46	0.38
			After	1	1797	1.19	3.93	3.02	0.49
				2	1718	1.04	3.90	2.51	0.50
				3	1103	1.02	3.57	2.17	0.53
		Right	Before	1	2460	−0.09	2.69	1.03	0.50
				2	2343	−0.41	2.70	0.74	0.61
				3	1901	−0.60	2.69	0.72	0.48
			After	1	1609	0.14	2.68	0.87	0.32
				2	1620	−0.47	2.44	0.49	0.53
				3	1195	−1.24	2.63	0.22	0.74