TY  - JOUR
PY  - 2019//
TI  - Switch between critical percolation modes in city traffic dynamics
JO  - Proceedings of the National Academy of Sciences of the United States of America
A1  - Zeng, Guanwen
A1  - Li, Daqing
A1  - Guo, Shengmin
A1  - Gao, Liang
A1  - Gao, Ziyou
A1  - Stanley, H. Eugene
A1  - Havlin, Shlomo
SP  - 23
EP  - 28
VL  - 116
IS  - 1
N2  - Percolation transition is widely observed in networks ranging from biology to engineering. While much attention has been paid to network topologies, studies rarely focus on critical percolation phenomena driven by network dynamics. Using extensive real data, we study the critical percolation properties in city traffic dynamics. Our results suggest that two modes of different critical percolation behaviors are switching in the same network topology under different traffic dynamics. One mode of city traffic (during nonrush hours or days off) has similar critical percolation characteristics as small world networks, while the other mode (during rush hours on working days) tends to behave as a 2D lattice. This switching behavior can be understood by the fact that the high-speed urban roads during nonrush hours or days off (that are congested during rush hours) represent effective long-range connections, like in small world networks. Our results might be useful for understanding and improving traffic resilience.<br><br>Copyright © 2018 the Author(s). Published by PNAS.<p />  <p>Language: en</p>
LA  - en
SN  - 0027-8424
UR  - http://dx.doi.org/10.1073/pnas.1801545116
ID  - ref1
ER  -