Evaluation of the Rain Effects on Gap Acceptance Behavior at Roundabouts by a Logit Model

Table 8

A Logit model development.

Variables	β	S.E,	P	Exp (β)
X1; (Gap, Seconds)	1.300	0.059	< 0.001	3.669
X2; (Type of Circulating Vehicles, 0: Passenger Car, 1: Heavy Vehicle)	-0.437	0.217	0.045	0.646
X3; (Traffic Volume at the Circulating lane)	-0.003	0.000	< 0.001	0.997
X4; (Weather Condition, 0: Good weather, 1: Rainy Condition)	-0.815	0.170	< 0.001	0.443
Constant	-3.158	0.274	< 0.001	0.043
Number of Observations	2,181
Log-likelihood Function	-635.530
Restricted Log-likelihood Function	-1417.961