Woo-Sung Jung et al 2008 EPL 81 48005 doi:10.1209/0295-5075/81/48005
Woo-Sung Jung, Fengzhong Wang and H. Eugene Stanley
Show affiliationsWe investigate the traffic flows of the Korean highway system, which contains both public and private transportation information. We find that the traffic flow Tij between city i and j forms a gravity model, the metaphor of physical gravity as described in Newton's law of gravity, PiPj/rij2, where Pi represents the population of city i and rij the distance between cities i and j. It is also shown that the highway network has a heavy tail even though the road network is a rather uniform and homogeneous one. Compared to the highway network, air and public ground transportation establish inhomogeneous systems and have power law behaviors.
Issue 4 (February 2008)
Received 4 October 2007, accepted for publication 20 December 2007
Published 21 January 2008
Woo-Sung Jung et al 2008 EPL 81 48005
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