Forecasting Travel Speed in the Rainfall Days to Develop Suitable Variable Speed Limits Control Strategy for Less Driving Risk

Table 3

Undetermined coefficients of EWM with different speed limit methods.

Percentile speed
Static 85th percentile speed	0.3887	0.2225	0.3887	1.074	15.088
Variable 85th percentile speed	0.2974	0.4748	0.2278	1.074	15.088
Variable 90th percentile speed	0.2551	0.5655	0.1794	1.091	18.372