研究成果：Sun X-Y, Ding Z-J, Huang G-H, (2016). Effect of density feedback on the two-route traffic scenario with bottleneck, International Journal of Modern Physics C, 27 (6): 1650058.
In this paper, we investigate the effect of density feedback on the two-route scenario with a bottleneck. The simulation and theory analysis shows that there exist two critical vehicle entry probabilities αc1 and αc2. When vehicle entry probability α ≤ αc1, four different states, i.e. free flow state, transition state, maximum current state and congestion state are identified in the system, which correspond to three critical reference densities. However, in the interval αc1 < α <αc2, the free flow and transition state disappear, and there is only congestion state when α ≥ αc2. According to the results, traffic control center can adjust the reference density so that the system is in maximum current state. In this case, the capacity of the traffic system reaches maximum so that drivers can make full use of the roads. We hope that the study results can provide good advice for alleviating traffic jam and be useful to traffic control center for designing advanced traveler information systems.