Table 4 Descriptive statistics of...

Table 4

Descriptive statistics of dependent variable

Zone	Indicator	Control group		Treat group		Proportion $(\frac{M_{c o n t r o l} - M_{t r e a t}}{M_{c o n t r o l}})$	F.
Zone	Indicator	Mean	SD	Mean	SD		F.	Mean p-value
Warning zone	V_W-mean(km/h)	109.438	11.640	115.282	6.389	−0.053	6.200	0.015*
	a_W-mean(m/s²)	−0.025	0.078	0.029	0.072	2.160	8.182	0.006**
	V_W-end(km/h)	106.923	13.813	115.368	6.850	−0.079	9.599	0.003**
	Jerk_W-mean(m/s³)	−0.0036	0.0087	−0.0078	0.0091	−1.6667	3.705	0.059
Transition zone	V_T-mean(km/h)	105.365	15.870	114.463	7.774	−0.086	8.480	0.005**
	a_T-mean(m/s²)	−0.131	0.212	−0.150	0.376	−0.145	0.057	0.812
	a _T-max(m/s²)	−0.397	0.529	−0.557	1.391	0.999	0.367	0.547
	V_T-end(km/h)	103.092	19.112	111.85	13.640	−0.085	4.453	0.039*
	Proportion_T-W	0.040	0.087	0.007	0.049	0.825	3.496	0.066
	Jerk_T-mean(m/s³)	−0.0226	0.0664	−0.0601	0.1814	−1.659	1.213	0.275
Heavy fog zone	V_F-mean(km/h)	71.154	12.593	71.715	9.578	−0.008	0.040	0.842
	a_F-mean(m/s²)	−0.109	0.054	−0.132	0.050	−0.211	3.052	0.085
	a _F-max(m/s²)	−2.335	1.466	−2.901	1.662	−0.242	37.406	0.000**
	Proportion_F-W	0.351	0.080	0.377	0.079	−0.007	1.745	0.191
	Proportion_F-T	0.320	0.096	0.372	0.082	−0.163	5.529	0.022*
	Jerk_F-mean(m/s³)	−0.0124	0.0164	−0.0117	0.0201	0.056	0.026	0.873

Zone	Indicator	Control group		Treat group		Proportion $(\frac{M_{c o n t r o l} - M_{t r e a t}}{M_{c o n t r o l}})$	F.
Zone	Indicator	Mean	SD	Mean	SD		F.	Meanp-value
Warning zone	V_W-mean(km/h)	109.438	11.640	115.282	6.389	−0.053	6.200	0.015*
	a_W-mean(m/s²)	−0.025	0.078	0.029	0.072	2.160	8.182	0.006**
	V_W-end(km/h)	106.923	13.813	115.368	6.850	−0.079	9.599	0.003**
	Jerk_W-mean(m/s³)	−0.0036	0.0087	−0.0078	0.0091	−1.6667	3.705	0.059
Transition zone	V_T-mean(km/h)	105.365	15.870	114.463	7.774	−0.086	8.480	0.005**
	a_T-mean(m/s²)	−0.131	0.212	−0.150	0.376	−0.145	0.057	0.812
	a _T-max(m/s²)	−0.397	0.529	−0.557	1.391	0.999	0.367	0.547
	V_T-end(km/h)	103.092	19.112	111.85	13.640	−0.085	4.453	0.039*
	Proportion_T-W	0.040	0.087	0.007	0.049	0.825	3.496	0.066
	Jerk_T-mean(m/s³)	−0.0226	0.0664	−0.0601	0.1814	−1.659	1.213	0.275
Heavy fog zone	V_F-mean(km/h)	71.154	12.593	71.715	9.578	−0.008	0.040	0.842
	a_F-mean(m/s²)	−0.109	0.054	−0.132	0.050	−0.211	3.052	0.085
	a _F-max(m/s²)	−2.335	1.466	−2.901	1.662	−0.242	37.406	0.000**
	Proportion_F-W	0.351	0.080	0.377	0.079	−0.007	1.745	0.191
	Proportion_F-T	0.320	0.096	0.372	0.082	−0.163	5.529	0.022*
	Jerk_F-mean(m/s³)	−0.0124	0.0164	−0.0117	0.0201	0.056	0.026	0.873

Notes:

*Significant at the 95% confidence level;

**significant at the 99% confidence level.

Note Proportion = $\frac{M_{c o n t r o l} - M_{t r e a t}}{M_{c o n t r o l}}$ represent a reduction ratio of the mean indicators between control group and treat group

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