Introducing Weather Factor Modelling into Macro Traffic State Prediction

Table 6

Speed prediction root mean square error (RMSE) (km/h).

⁢Feature: RMSE of speed prediction		Good weather condition	Light snow condition	Heavy snow condition
Daytime; 6 AM–9 PM	Conventional	6.88	9.12	11.69
	Weather-specific	5.32	8.21	9.52
AM peak hours; 7 AM–9 PM	Conventional	6.47	8.35	16.21
	Weather-specific	4.54	6.81	14.96
PM peak hours; 4 PM–7 PM	Conventional	9.39	15.89	17.43
	Weather-specific	6.45	15.29	13.51