Links
[1] https://www.itf-oecd.org/pdf-21
[2] https://www.itf-oecd.org/sites/default/files/docs/saudiarabia.pdf
[3] https://www.itf-oecd.org/tags/air-transport
[4] https://www.itf-oecd.org/tags/automobiles
[5] https://www.itf-oecd.org/tags/carbon-dioxide-emissions
[6] https://www.itf-oecd.org/tags/energy
[7] https://www.itf-oecd.org/tags/freight
[8] https://www.itf-oecd.org/tags/fuels
[9] https://www.itf-oecd.org/tags/greenhouse-gas-emissions
[10] https://www.itf-oecd.org/tags/greenhouse-gases
[11] https://www.itf-oecd.org/tags/gross-domestic-product
[12] https://www.itf-oecd.org/tags/ownership
[13] https://www.itf-oecd.org/tags/passengers
[14] https://www.itf-oecd.org/tags/polluter-pays-principle
[15] https://www.itf-oecd.org/tags/roads
[16] https://www.itf-oecd.org/tags/sea-transport
[17] https://www.itf-oecd.org/tags/transport