[Agarana, M. C., Bishop, S. A. & Agboola, O. O., 2017. Minimizing Carbon Emissions from Transportation Projects in Sub-Saharan African Cities Using Mathematical Model: A Focus on Lagos, Nigeria. International Conference on Sustainable Materials Processing and Manufacturing (SMPM), Volume 7, pp. 596-601. doi: 10.1016/j.promfg.2016.12.089.]Open DOISearch in Google Scholar
[Aguir-Baragaoui, S., Liouane, N. & Nouri, F. Z., 2014. Environmental Impact determinants: An empirical analysis based on the STIRPAT. Procedia - Social and Behavioral Sciences, Volume 109, pp. 449-458.10.1016/j.sbspro.2013.12.489]Search in Google Scholar
[Al-Mulali, U. & Ozturk, I., 2015. The effect of energy consumption, urbanization, trade openness, industrial output, and the political stability on the environmental degradation in the MENA (Middle East and North African) region. Energy, Volume 84, pp. 382-389. doi: 10.1016/j.energy.2015.03.004.]Open DOISearch in Google Scholar
[Alshehry, A. S. & Belloumi, M., 2016. Study of the environmental Kuznets curve for transport carbon dioxide emissions in Saudi Arabia. Renewable and Sustainable Energy Reviews, pp. 1-9. doi: 10.1016/j.rser.2016.11.122.]Open DOISearch in Google Scholar
[Arvin, M. B., Pradhan, R. P. & Norman, N. R., 2015. Transportation intensity, urbanization, economic growth, and CO2 emissions in the G-20 countries. Utilities Policy, Volume 35, pp. 50-66. doi: 10.1016/j.jup.2015.07.003.]Open DOISearch in Google Scholar
[Bangake, C. & Eggoh, J. C., 2012. Pooled Mean Group estimation on international capital mobility in African countries. Research in Economics, Volume 66, pp. 7-17.10.1016/j.rie.2011.06.001]Search in Google Scholar
[Bokpin, G. A., 2016. Foreign direct investment and environmental sustainability in Africa: The role of institutions and governance. Research in International Business and Finance, pp. 1-18. doi: 10.1016/j.ribaf.2016.07.038.]Open DOISearch in Google Scholar
[Boutabba, M. A., Diaw, D. & Lessoua, A., 2018. Environment-energy-growth nexus in Sub-Saharan Africa: The role of intermediate goods. International Economics, pp. 1-30. doi: 10.1016/j.inteco.2018.04.003.]Open DOISearch in Google Scholar
[Breitung, J., 2000. The local power of some unit root tests for panel data. In: In: Baltagi, B. (Ed.), Nonstationary Panels, Panel Cointegration, and Dynamic Panels.. JAI, Amsterdam: In: Advances in Econometrics, pp. 161-178.10.1016/S0731-9053(00)15006-6]Search in Google Scholar
[Campbell, P. et al., 2018. Impacts of transportation sector emissions on future U.S. air quality in a changing climate. Part I: Projected emissions, simulation design, and model evaluation. Environmental Pollution, Volume 238, pp. 903-917.10.1016/j.envpol.2018.04.020]Search in Google Scholar
[Chaturvedi, V. & Kim, S. H., 2015. Long term energy and emission implications of a global shift to electricity-based public rail transportation system. Energy Policy, Volume 81, p. 176–185. doi: 10.1016/j.enpol.2014.11.013.]Open DOISearch in Google Scholar
[Chirisa, I., Bandauko, E. & Gaza, M., 2015. Transport and the environment: a critical review for Africa. Chinese Journal of Population Resources and Environment, 13(4), pp. 309-319.10.1080/10042857.2015.1078489]Search in Google Scholar
[Choi, J. & Roberts, D. C., 2015. How Does the Change of Carbon Dioxide Emissions Affect Transportation Productivity? A Case Study of the US Transportation Sector from 2002 to 2011. Open Journal of Social Sciences, Volume 3, pp. 96-106. http://dx.doi.org/10.4236/jss.2015.32013.10.4236/jss.2015.32013]Search in Google Scholar
[da Silva, B. A. et al., 2019. New indicator for measuring the environmental sustainability of publicly traded companies: An innovation for the IPAT approach. Journal of Cleaner Production, Volume 215, pp. 354-363.10.1016/j.jclepro.2019.01.039]Search in Google Scholar
[Dietz, T. & Rosa, E. A., 1994. Rethinking the environmental impacts of population, affluence and technology. Human Ecology Review, Volume 1, pp. 277-300.]Search in Google Scholar
[Dietz, T. & Rosa, E. A., 1997. Effects of population and affluence on CO2 emissions. Proceedings of the National Academy of Sciences of the United States of America, Volume 94, pp. 175-179.10.1073/pnas.94.1.175]Search in Google Scholar
[Ehrlich, P. & Holdren, J., 1971. The impact of population growth. Science, 171(3977), pp. 1212-1217.10.1126/science.171.3977.1212]Search in Google Scholar
[El-Fadel, M. & Bou-Zeid, E., 1999. Transportation GHG emissions in developing countries. The case of Lebanon. Transportation Research Part D 4, Volume 4, pp. 251-264..10.1016/S1361-9209(99)00008-5]Search in Google Scholar
[Ertugrul, H. M., Cetin, M., Seker, F. & Dogan, E., 2016. The impact of trade openness on global carbon dioxide emissions: Evidence from the top ten emitters among developing countries. Ecological Indicators, Volume 67, p. 543–555. doi: 10.1016/j.ecolind.2016.03.027.]Open DOISearch in Google Scholar
[Halicioglu, F. & Ketenci, N., 2016. The impact of international trade on environmental quality: The case of transition countries. Energy, Volume 109, pp. 1130-1138. doi: 10.1016/j.energy.2016.05.013.]Open DOISearch in Google Scholar
[Hasanov, F. J., Liddle, B. & Mikayilov, J. I., 2018. The impact of international trade on CO2 emissions in oil exporting countries: Territory vs consumption emissions accounting. Energy Economics, pp. 1-27. doi: 10.1016/j.eneco.2018.06.004.]Open DOISearch in Google Scholar
[Hossain, S., 2012. An Econometric Analysis for CO2 Emissions, Energy Consumption, Economic Growth, Foreign Trade and Urbanization of Japan. Low Carbon Economy, Volume 3, pp. 92-105. http://dx.doi.org/10.4236/lce.2012.323013.10.4236/lce.2012.323013]Search in Google Scholar
[Huang, S. et al., 2017. Revisiting China-Africa trade from an environmental perspective. Cleaner Production, pp. 1-45. doi: 10.1016/j.jclepro.2017.08.171.]Open DOISearch in Google Scholar
[Im, K. S., Pesaran, M. H. & Shin, Y. C., 2003. Testing for units roots in heterogeneous panels. Journal of Econometrics, Volume 115, pp. 53-74.10.1016/S0304-4076(03)00092-7]Search in Google Scholar
[Kahouli, B. & Omri, A., 2017. Foreign direct investment, foreign trade and environment: New evidence from simultaneous-equation system of gravity models. Research in International Business and Finance, pp. 1-21. doi: 10.1016/j.ribaf.2017.07.161.]Open DOISearch in Google Scholar
[Kim, D.-H., Suen, Y.-B. & Lin, S.-C., 2018. Carbon Dioxide Emissions and Trade: Evidence from Disaggregate Trade Data. Energy Economics, pp. 1-42. doi: 10.1016/j.eneco.2018.08.019.]Open DOISearch in Google Scholar
[Kuznets, S., 1955. Economic Growth and Income Inequality. American Economic Review, 45(1), pp. 1-28.]Search in Google Scholar
[Le, T.-H., Chang, Y. & Park, D., 2016. Trade openness and environmental quality: International evidence. Energy Policy, Volume 92, p. 45–55. doi: 10.1016/j.enpol.2016.01.030.]Open DOISearch in Google Scholar
[Levin, A., Lin, C. & Chu, C., 2002. Unit root test in panel data: asymptotic and finite sample properties. Journal of Econometrics, 108(1), pp. 1-24.10.1016/S0304-4076(01)00098-7]Search in Google Scholar
[Levin, A. & Lin, C. F., 1993. Unit root tests in panel data: new results. UC-San Diego: Discussion paper, Department of Economics.]Search in Google Scholar
[Longe, A. E., Ajulo, K. D., Omitogun, O. & Adebayo, E. O., 2018. Trade, Transportation and Environment Nexus in Nigeria. The European Journal of Applied Economics, 15(2), pp. 29-42.10.5937/EJAE15-17360]Search in Google Scholar
[Malthus, T., 1798. An Essay on the Principle of Population. An Essay on the Principle of Population, as it Affects the Future Improvement of Society with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers. ed. London: Printed for J. Johnson, in St. Paul’s Church-Yard.]Search in Google Scholar
[Nunes, P., Pinheiro, F. & Brito, M. C., 2019. The effects of environmental transport policies on the environment, economy and employment in Portugal. Journal of Cleaner Production, Volume 213, pp. 428-439.10.1016/j.jclepro.2018.12.166]Search in Google Scholar
[Pedroni, P., 1999. Critical values for cointegration tests in heterogenous panels with multiple regressors. Oxford Bullettin of Economics and Statistics, Special Issue, pp. 653-670.10.1111/1468-0084.61.s1.14]Search in Google Scholar
[Pesaran, M. H., 2005. A simple panel unit root test in presence of cross section dependence.. s.l.: Cambridge University Working Paper.]Search in Google Scholar
[Pesaran, M. H., Shin, Y. & Smith, R. P., 1999. Pooled Mean Group Estimation of Dynamic Heterogenous Panels. Journal of the American Statiscal Association, 94(446), pp. 621-634.10.1080/01621459.1999.10474156]Search in Google Scholar
[Rehman, M. U. & Rashid, M., 2017. Energy consumption to environmental degradation, the growth appetite in SAARC nations. Renewable Energy, Volume 111, pp. 284-294.10.1016/j.renene.2017.03.100]Search in Google Scholar
[Saidi, S. & Hammami, S., 2017. Modeling the causal linkages between transport, economic growth and environmental degradation for 75 countries. Transportation Research Part D, Volume 53, p. 415–427. doi: 10.1016/j.trd.2017.04.031.]Open DOISearch in Google Scholar
[Shahbaz, M., Nasreen, S., Ahmed, K. & Hammoudeh, S., 2016. Trade openness–carbon emissions nexus: The importance of turning points of trade openness for country panels. Energy Economics, pp. 1-38. doi: 10.1016/j.eneco.2016.11.008.]Open DOISearch in Google Scholar
[Shahzad, S. J. H., Kumar, R. R., Zakaria, M. & Hurr, M., 2017. Carbon emission, energy consumption, trade openness and financial development in Pakistan: A revisit. Renewable and Sustainable Energy Reviews, Volume 70, p. 185–192. doi: 10.1016/j.rser.2016.11.042.]Open DOISearch in Google Scholar
[Tongwane, M., Piketh, S., Stevens, L. & Ramotubei, T., 2015. Greenhouse gas emissions from road transport in South Africa and Lesotho between 2000 and 2009. Transportation Research Part D, Volume 37, pp. 1-13. doi: 10.1016/j.trd.2015.02.017.]Open DOISearch in Google Scholar
[United States Environmental Protection Agency, 2017. Global Greenhouse Gas Emissions Data. [Online] Available at: https://www.epa.gov/ghgemissions/global-greenhouse-gas-emissions-data#Sector [Accessed 8 September 2018].]Search in Google Scholar
[Wang, H., Yang, X. & Ou, X., 2014. A Study on Future Energy Consumption and Carbon Emissions of China’s Transportation Sector. Low Carbon Economy, Volume 5, pp. 133-138. http://dx.doi.org/10.4236/lce.2014.54014.10.4236/lce.2014.54014]Search in Google Scholar
[Xie, R., Fang, J. & Liu, C., 2017. The effects of transportation infrastructure on urban carbon emissions. Applied Energy, 196(15), pp. 199-207.10.1016/j.apenergy.2017.01.020]Search in Google Scholar
[Xu, L. et al., 2018. Investigating the comparative roles of multi-source factors influencing urban residents’ transportation greenhouse gas emissions. Science of the Total Environment, Volume 644, p. 1336–1345. doi: 10.1016/j.scitotenv.2018.07.072.]Open DOISearch in Google Scholar
[Yoon, Y., Yang, M. & Kim, J., 2018. An Analysis of CO2 Emissions from International Transport and the Driving Forces of Emissions Change. Sustainability, 10(1677), pp. 1-17. doi: 10.3390/su10051677.]Open DOISearch in Google Scholar
[York, R., Rosa, E. A. & Dietz, T., 2003. STIRPAT, IPAT and ImPACT: Analytic Tools for Unpacking the Driving Forces of Environmental impact.. Ecological Economics, Volume 46, pp. 351-365.10.1016/S0921-8009(03)00188-5]Search in Google Scholar