1. Eurostat (2017) Freight transport statistics – modal split.
http://ec.europa.eu/eurostat/statistics-explained/index.php/Freight_transport_statistics_-_modal_split
. Accessed 25 April 2018
2. EU (2017) EU Transport in figures – Statistical Pocketbook 2017.
https://ec.europa.eu/transport/facts-fundings/statistics/pocketbook-2017_en
. Accessed 15 April 2018
3. MTRU (2017) Impact on congestion of transfer of freight from road to rail on key strategic corridor. Campaign for better transport.
https://www.bettertransport.org.uk/sites/default/files/research-files/cross-modal-freight-study.pdf
. Accessed 13 April 2018
4. Ricardo-AEA (2014) Update of the handbook of external costs of transport. In: Final Report. Ricardo-AEA, UK
5. Royal Academy of Engineering (2015). The transport congestion challenge getting the most out of the UK’s road and rail networks.
https://www.raeng.org.uk/RAE/media/Publications/Reports/The-Transport-Congestion-Challenge.pdf
. Accessed 11 April 2018