Design and Research of a Vehicle Approaching Reminder Device Based on ZigBee Wireless Sensor Network

Table 4

Statistics of related factors under different driving behaviors.

Emergency braking event	Quantity	BRT (s)		IHD (m)		BHD (m)
		Mean	SD	Mean	SD	Mean	SD
Behaviour 1	55	1.92	0.76	35.04	10.17	18.05	9.96
Behaviour 2	27	2.41	0.83	25.06	13.11	15.21	6.88
Behaviour 3	27	2.72	0.88	30.05	12.08	17.75	10.81
Behaviour 4	35	2.02	0.71	23.08	10.77	14.61	5.77
Behaviour 5	44	2.38	0.91	34.71	14.61	19.71	10.97
Behaviour 6	26	2.21	0.75	34.51	13.67	15.97	7.65