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

Table 5

Data summary and variable descriptive statistics.

Category		Normal	Rainy	Total
# of data		1,681	740	2,421
Gap (sec)	Mean	5.12	5.25	5.16
	S.D	2.81	2.97	2.86
	Acceptance (%)	1,135 (67.5%)	429 (58.0%)	1,564 (64.6%)
	Reject (%)	546 (32.5%)	311 (42.0%)	857 (35.4%)
Waiting Time (sec)	Mean	4.06	6.73	4.88
	S.D	5.59	8.99	6.92
Follow-up time (sec)	Mean	17.30	15.78	16.83
	S.D	18.62	15.90	17.84
# vehicles observed on Entrance	Mean	265.1	323.5	282.9
	S.D	84.50	102.05	94.13
	Passenger Car (%)	1,498 (89.1%)	678 (91.6%)	2,176 (89.9%)
	Heavy Vehicle (%)	183 (10.9%)	62 (8.4%)	245 (10.1%)
# vehicles observed on Circulation	Mean	374.5	502.6	413.6
	S.D	143.01	152.45	157.41
	Passenger Car (%)	1,466 (87.2%)	670 (90.5%)	2,136 (88.2%)
	Heavy Vehicle (%)	215 (12.8%)	70 (9.5%)	285 (11.8%)
Weather (%)		1,681 (69.4 %)	740 (30.6%)	-