Analysis and Prediction of the Interval Duration between the First and Second Accidents considering the Spatiotemporal Threshold

Table 2

Correspondence table of variable and codes.

Code	Variable	Code	Variable
X1	Collision degree	X15	Station
X2	Influence distance	X16	No thoroughfare
X3	Side	X17	Traffic light
X4	Airport postcode	X18	Sunrise sunset
X5	Temperature	X19	Working day
X6	Humidity	X20	No precipitation
X7	Pressure	X21	Season
X8	Visibility	X22	Peak period
X9	Wind direction	X23	The weather
X10	Wind speed	X24	Impact distance of second accident
X11	Conveniences	X25	Severity of second accident collision
X12	Intersection	X26	Whether the second accident occurred during the peak period
X13	Junction	X27	Weather at the time of the second accident
X14	Railway	X28	Duration of first accident