Gravity model in the Korean highway

Details Gravity model in the Korean highway Gravity model in the Korean highway

2007-10-05

arxiv.org/abs/0710.1274v1

Europhys. Lett. 81, 48005 (2008).

Physics

Physics and Society

13 pages

Scientific paper

10.1209/0295-5075/81/48005

We investigate the traffic flows of the Korean highway system, which contains both public and private transportation information. We find that the traffic flow T(ij) between city i and j forms a gravity model, the metaphor of physical gravity as described in Newton's law of gravity, P(i)P(j)/r(ij)^2, where P(i) represents the population of city i and r(ij) 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.

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