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Zbl 0978.90016
Tajima, Y.; Takimoto, K.; Nagatani, T.
Scaling of pedestrian channel flow with a bottleneck.
(English)
[J] Physica A 294, No.1-2, 257-268 (2001). ISSN 0378-4371

Summary: Pedestrian channel flow at a bottleneck is investigated under the open boundaries by using the lattice-gas model of biased random walkers. It is shown that a dynamical phase transition occurs from the free flow to the choking flow at a critical density $p_c$ with increasing density. The flow rate saturates at higher density than the critical density. In the choking-flow region, a scaling behavior is found as follows: the saturated flow rate $J_s$ scales as $J_s\propto d^{0.93\pm 0.02}$ and the critical density $p_c$ scales as $p_c\propto(d/W)^{1.16\pm 0.02}$, where $d$ is the width of the bottleneck and $W$ is the width of channel. The plot of the rescaled flow rate against the rescaled density collapses onto a single curve.
MSC 2000:
*90B20 Highway traffic
60G50 Sums of independent random variables

Keywords: lattice-gas model; biased random walkers; dynamical phase transition

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