Influence of Large Vehicles on the Speed of Expressway Traffic Flow

Table 5

: Model prediction of the average speed of passenger cars in G65.

No.	LOS		Mixing rate (%)	Hourly volume (veh/h)	Average speed of passenger cars	Model 1		HCM model
						Forecast value	Relative error (%)	Forecast value	Relative error (%)
1	A	0.30	25.7	866	105.6	107.6	1.89	120	13.64
2		0.33	28.9	983	105.5	107.3	1.71	120	13.74
3		0.33	23.7	988	102.9	107.8	4.76	120	16.62
4		0.34	12.0	1030	108.8	109.2	0.37	120	10.29
5	B	0.38	21.8	1266	98.6	98.9	0.30	120	21.67
6		0.39	15.3	1478	100.3	101.2	0.90	120	19.64
7		0.55	11.1	2048	96.4	101.4	5.19	117.8	22.24
8		0.50	11.2	1895	100.9	101.4	0.50	119.0	17.97
9		0.54	9.9	1942	100.2	101.9	1.70	119.1	18.89
10		0.48	7.3	1976	101.6	103.0	1.38	119.6	17.70
11	C, D	0.57	10.5	2083	95.8	91.2	-4.80	117.8	22.97
12		0.65	8.4	2237	97.3	92.2	-5.24	117.4	20.71
13		0.68	8.6	2343	95.1	92.1	-3.15	116.0	22.00
14		0.75	3.9	2715	93.9	95.5	1.70	115.6	23.13
15		0.84	5.2	2867	88.7	94.3	6.31	111.4	25.54
	Average absolute relative error					—	2.66	—	19.12