Origin-Destination-Based Travel Time Reliability under Different Rainfall Intensities: An Investigation Using Open-Source Data

Table 4

Summary of median and trimmed mean of BI-values and BI variation ratio under six weather conditions.

Location measure	ATT range (min)	Normal	Rainfall intensity (BI variation ratio)				Rain
			Light rain ((L-N)/)	Moderate rain ((M-N)/)	Heavy rain ((H-N)/)	Extreme rain ((E-N)/)
Median of BI-values	0–5	0.4219	0.4342 (2.9%)	0.4985 (18.2%)	0.5157 (22.2%)	0.5274 (25.0%)	0.4997
	5–10	0.3586	0.3845 (7.2%)	0.4544 (26.7%)	0.4715 (31.5%)	0.4933 (37.6%)	0.4268
	10–15	0.3568	0.3586 (5.0%)	0.4573 (28.2%)	0.4598 (28.9%)	0.4823 (35.2%)	0.4080
	15–20	0.3399	0.3265 (−3.9%)	0.3956 (16.4%)	0.3962 (16.6%)	0.4113 (21.0%)	0.3604
	20–25	0.3287	0.3513 (6.9%)	0.3588 (9.2%)	0.3489 (6.1%)	0.3750 (14.1%)	0.3515
	Mean	0.3612	0.3710 (2.7%)	0.4329 (19.9%)	0.4384 (21.4%)	0.4579 (26.8%)	0.4092
Trimmed mean of BI-values	0–5	0.4413	0.4555 (3.2%)	0.5078 (15.1%)	0.5205 (17.9%)	0.5476 (24.1%)	0.4990
	5–10	0.4098	0.4351 (6.2%)	0.5047 (23.2%)	0.5399 (31.7%)	0.5376 (31.2%)	0.4809
	10–15	0.3754	0.3793 (1.0%)	0.4644 (23.7%)	0.4866 (29.6%)	0.5030 (34.0%)	0.4429
	15–20	0.3580	0.3675 (2.7%)	0.4151 (15.9%)	0.4121 (15.1%)	0.4304 (20.2%)	0.4007
	20–25	0.3190	0.3291 (3.2%)	0.3519 (10.3%)	0.3532 (10.7%)	0.3697 (15.9%)	0.3448
	Mean	0.3807	0.3933 (3.3%)	0.4488 (17.9%)	0.4625 (21.5%)	0.4777 (25.5%)	0.4337

N, L, M, H, and E indicate normal, light rain, moderate rain, heavy rain, and extreme rain, respectively.