Speeding Violation Type Prediction Based on Decision Tree Method: A Case Study in Wujiang, China

Table 3

Descriptive statistics of the final speeding violation samples (N=46072).

Variable	Description	N (proportion)	Variable type
Speeding type	Type 1	39752 (86.30%)	Response
	Type 2	6320 (13.70%)
License plate	Local license plate	39207 (85.10%)	Predictor
	Foreign license plate	6865 (14.90%)
Season	Spring	225508 (48.90%)	Predictor
	Summer	9611 (20.90%)
	Autumn	8836 (19.20%)
	Winter	5117 (11.10%)
Speeding area	Fenhu	41 (0.10%)	Predictor
	Songling	42961(93.20%)
	Lili	3070 (6.70%)
Position	Country road	36941 (80.20%)	Predictor
	Urban road	5473 (11.90%)
	Intersection	3658 (7.90%)
Rainfall (mm/h)	No rain	42219 (91.60%)	Predictor
	Light rain	3823 (8.30%)
	Heavy rain	30 (0.10%)