Yetkiner Hakan, Beyzatlar Mehmet Aldonat
Department of Economics, Izmir University of Economics, 35330, Izmir, Turkey.
Department of Economics, Dokuz Eylül University, 35390, Izmir, Turkey.
Transp Policy (Oxf). 2020 Oct;97:19-25. doi: 10.1016/j.tranpol.2020.07.004. Epub 2020 Jul 11.
This study examines the causal relationship between wealth and transportation. The study first develops two alternating theoretical frameworks between wealth and transportation: one in which transportation is demand-driven and one in which transportation has dual role, demand-driven and supply-driving. Next, the study undertakes Granger-causality estimations for a panel of 18 countries over the period 1970-2017. It is found that the dominant Granger-causality relationship is bidirectional for majority of countries. The study also shows that there is high consistency in the Granger-causality relationship between wealth and transportation, and income and transportation. The study has three important contributions: First, the relationship between wealth and transportation is shown both theoretically and empirically. Second, transportation is shown to have dual role in an economy. Finally, it is shown that the wealth-transportation relationship and the transport-income relationship are equally robust and consistent.
本研究考察了财富与交通之间的因果关系。该研究首先构建了关于财富与交通的两个交替理论框架：一个是交通由需求驱动的框架，另一个是交通具有双重作用（需求驱动和供给驱动）的框架。接下来，该研究对1970年至2017年期间18个国家的面板数据进行了格兰杰因果关系估计。研究发现，对于大多数国家而言，主导的格兰杰因果关系是双向的。该研究还表明，财富与交通之间以及收入与交通之间的格兰杰因果关系具有高度一致性。该研究有三个重要贡献：第一，从理论和实证两方面展示了财富与交通之间的关系。第二，表明交通在经济中具有双重作用。最后，表明财富 - 交通关系和交通 - 收入关系同样稳健且一致。
