Traffic Incident Clearance Time Prediction and Influencing Factor Analysis Using Extreme Gradient Boosting Model

Table 6

Relative importance of explanatory factors on clearance time.

Cluster		1		2
Rank		Variable	Relative importance (%)	Variable	Relative importance (%)
Significant explanatory factors	1	AADT	17.70	Response time	22.30
	2	Incident type	17.30	AADT	14.00
	3	Response time	15.10	Incident type	12.80
	4	Lane closure type	8.00	Lane closure type	8.40
General explanatory factors	5	WSP involved	7.60	Fire involved	8.40
	6	Month of year	6.10	Weather	6.10
	7	Traffic control	5.00	Month of year	6.10
	8	Weather	4.70	Traffic control	6.10
	9	Day of week	4.60	Injury involved	5.00
	10	Peak hours	3.10	HOV	2.80
Insignificant explanatory variables	11	HOV	2.50	Peak hours	2.20
	12	Fire involved	2.50	Heavy truck involved	2.20
	13	Time of day	2.10	WSP involved	1.70
	14	Heavy truck involved	1.70	Day of week	1.10
	15	Injury involved	1.70	Time of day	0.60
	16	Work zone involved	0.30	Work zone involved	0.20