AN APPLICATION OF AN INTEGRATED TRANSPORT NETWORK - MULTIREGIONAL CGE MODEL TO THE CALIBRATION OF SYNERGY EFFECTS OF HIGHWAY INVESTMENTS

作者：Kim Euijune^*; Hewings Geoffrey J D

来源：Economic Systems Research, 2009, 21(4): 377-397.

DOI：10.1080/09535310903444758

• Computable general equilibrium model
• Transportation investment
• Synergy effect
• Regional social accounting matrix

A transportation network-multiregional CGE model is applied to estimate the synergy effects of a set of highway projects on value added by region and industrial sector. This synergy effect is defined as a difference between the summation of the net GDP increase from the development of each highway sub-link without spatial linkage and the change in GDP resulting from the concurrent development of all links with spatial linkages. Among nine east-west highways in Korea, the East-West 9 highway increases the GDP by 0.3% over the 30-year time period horizon, with 0.016% of the GDP due to the synergy effect. The East-West 9 highway has the largest synergy effect of US$0.164 billion per year on the manufacturing sector of Kwangju Metropolitan Area, resulting in a gain in a regional GRP per capita of US$15.88 per year. Since most synergy effects are generated in less developed regions, highway development can contribute to the reduction in regional disparities.

• 出版日期2009