Quantifying the Impact of Weather Events on Travel Time and Reliability

Table 2

Analysis results from regression models.

Time Periods	Model	Travel time under clear condition (min)	% increase in travel time under rain condition	% increase in travel time under snow condition
18:40-6:25, weekdays	Mean	7.8	4.1	19.5
	80th	7.9	4.3	18.7
	95th	8.0	10.5	98.6
6:25-9:05, Mon/Fri	Mean	9.5	35.1	39.9
	80th	11.2	37.8	60.2
	95th	13.7	77.1	92.4
6:25-9:05, Tue-Thu	Mean	11.3	22.5	47.2
	80th	13.0	28.7	36.8
	95th	17.0	54.0	209.1
9:05-14:50, weekdays	Mean	7.9	7.0	13.6
	80th	7.8	8.6	11.0
	95th	8.7	25.5	59.0
14:50-18:40, Mon-Wed	Mean	8.1	13.7	14.0
	80th	8.0	29.4	16.9
	95th	10.6	37.2	46.5
14:50-18:40, Thu-Fri	Mean	9.1	15.2	26.5
	80th	10.2	16.9	50.3
	95th	13.9	27.9	61.6