A Comparative Study on Traffic Flow Models Based on Real Measured Data

Through both the analysis of over 26,000 real measured data collected on Shanghai's Yan'an Viaduct and the comparison with Kerner's classic model, it is found that the flow-density figure shows that non-linear regional characters even exist in the low density section. In addition, a method to quantify the proportion of aggressive drivers is proposed by means of fitting different equilibrium functions to real measured data and then forming a piecewise function composed of the best-fit function in each density section. This piecewise equilibrium function is much closer to China's present traffic conditions. Keywords: Traffic Flow Models; Measured Data; Flow-density Figure; Piecewise Equilibrium Function ;Aggressive Drivers;