Analysis on the Prewarning Distance of Expressway Traffic Based on Lane-Selection Cell Transmission Model

Table 3

SD value at different flow and prewarning distance.

Flow (veh/hr)	Prewarning distance (m)
	0	50	100	150
200	13.8814	9.1464	8.8194	8.6678
400	16.1221	9.4733	9.1172	8.9067
600	18.0352	8.8832	8.553	8.36
800	18.0341	10.0661	8.9644	8.721
1,000	18.0429	12.949	9.4327	9.1478
1,200	18.0405	15.2116	11.7358	10.1989
1,400	18.0276	16.3528	13.086	12.2097
1,600	18.0484	16.4968	13.7166	13.2346
1,800	17.9656	16.6299	13.9283	13.8034