Intercity express bus flow in Korea and its network analysis

We investigated the express bus flow in Korea and its network topology. By using a gravity type model, we found that the bus flow between cities depends on the square root of the product of the population size of city A and the population size of city B. On the other hand, the total bus flow of a city depends on only its population size. These different dependences on population originate from the network property of the express bus network.

► We investigate the express bus flow in Korea and its network topology.
► The traffic flow between cities A and B shows a gravity type model.
► The weight is proportional to the square root of the product of the population.
► The strength depends on only the population of the city.
► The different dependences originate from the network topology.