Influence of Large Vehicles on the Speed of Expressway Traffic Flow

Table 4

Passenger-car speed prediction model for the mixing rate of large vehicles.

Traffic flow patterns	Prediction model 1	Prediction model 2
≤ 0.35
	R^2 = 0.625	R^2 = 0.598
0.35 <  ≤ 0.55
	R^2 = 0.768	R^2 = 0.601
0.55 <  ≤ 0.90
	R^2 = 0.894	R^2 = 0.864

is the average speed of traffic flow (km/h), is the average speed of passenger-cars (km/h), and x is the mixing rate of large vehicles (%), 0 ≤ x ≤ 40.