A Data-Driven Approach to Estimate Incident-Induced Delays Using Incomplete Probe Vehicle Data: Application to Safety Service Patrol Program Evaluation

Table 2

The selected random forest features.

Numbers	Feature variables	Types	Descriptions	Importance
1	Traffic volume by passenger cars	Numeric	Number of vehicles	0.30
2	Incident clearance hour	Numeric	Hours	0.28
3	Truck traffic volume	Numeric	Number of vehicles	0.27
4	Lane blockage hour	Numeric	Hours	0.03
5	The number of incidents that involved vehicles	Numeric	Number of vehicles	0.03
6	Event type (stalled vehicle)	Factor	1: yes, 0: no	0.02
7	Safety service patrol application indicator	Factor	1: yes, 0: no	0.01
8	Event type (1 vehicle crash)	Factor	1: yes, 0: no	0.01
9	Event type (2 vehicles crash)	Factor	1: yes, 0: no	0.01
10	Event type (debris)	Factor	1: yes, 0: no	0.01