Exploring Factors Contributing to Crash Injury Severity in the Rural-Urban Fringe of the Central City

Table 3

Variable assignment.

No.	Influence factor	Variables	Assignment and meaning
1	Time of day	x1	(00 : 00–02 : 59) = 1, (03 : 00–05 : 59) = 2, (06 : 00–08 : 59) = 3, (09 : 00–11 : 59) = 4, (12 : 00–14 : 59) = 5, (15 : 00–17 : 59) = 6, (18 : 00–20 : 59) = 7, (21 : 00–23 : 59) = 8
2	Vehicle type	x2	Large passenger vehicle = 1, small passenger vehicle = 2, car = 3, heavy vehicle = 4, motorcycle = 5, other = 6
3	Road feature	x4	Straight road section = 1, curved road section = 2, intersection = 3
4	Crash type	x3	Collision = 1, vehicle-pedestrian crash = 2, rear-end crash = 3, rollover = 4, collision fixture = 5