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Table 3 The number of line crossings during day and night-time at different KSS levels. Percentages of observations distributed per KSS, separated for day/night, in brackets

From: The severity of driver fatigue in terms of line crossing: a pilot study comparing day- and night time driving in simulator

	Day		Night
KSS	0 line crossings	≥1 line crossing	0 line crossings	≥1 line crossing
1 (KSS 1–5)	35 (100)	0	0	0
2 (KSS 6)	20 (100)	0	10 (100)	0
2 (KSS 7)	19 (95)	1 (5)	16 (100)	0
3 (KSS 8)	6 (75)	2 (25)	23 (88)	3 (12)
3 (KSS 9)	6 (67)	3 (33)	25 (60)	17(40)

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