The Transportation-growth nexus in USA: Fresh insights from pre-post global crisis period

This paper examines the transportation-growth nexus for the USA by taking monthly data for the period of 2000-2017. The Quantile-on-Quantile (QQ) approach introduced by Sim and Zhou (2015) is applied for empirical analysis. The empirical results show that the effect of economic growth (transportation services with sub-indices) on transportation services with sub-indices (economic growth) is positive for the USA during the pre-post crisis period. Overall, the results have shown the positive effect of transportation on economic growth, however the magnitude of the effect is intensified in the post crisis period, On the other hand, the effect of economic growth on transportation tends to reflect no apparent change displaying the strong positive association in the entire time period. Therefore, this study proposed the policy guidelines considering the links between transportation and economic growth enduring the changes transpired in pre and post period of the global crisis.