Analyzing Traffic Crash Severity in Work Zones under Different Light Conditions

Table 5

Rank of the importance of variables under different light conditions.

Rank	Daylight	Dark-lighted	Dark-not-lighted
	Manner of first collision	Manner of first collision	Drugs and alcohol
	Location	No. of lanes	Speed limit
	Drugs and alcohol	Traffic control devices	Weather cond.
	Terrain	Location	Traffic control devices
	Urban or rural	Weather cond.	Date of crash
	Traffic control devices	Drugs and alcohol	Manner of first collision
	Speed limit	Relation to first roadway	Location
	Date of crash	Urban or rural	No. of lanes
	No. of lanes	Speed limit	Operation
	Body code	Terrain	Body code
	Relation to first roadway		Relation to first roadway
	At fault		Urban or rural
	Vehicle maneuver