1. Office of road and rail (2021) Statistics table 1310 - Freight moved. ORR Data Portal. https://dataportal.orr.gov.uk/statistics/usage/freight-rail-usage-and-performance/table-1310-freight-moved/. Accessed 17 August 2021
2. Class I brake test-initial terminal inspection (2020) 49 C.F.R § 232.205
3. Verband Deutscher Verkehrsunternehmen (2015) Bremsen im Betrieb bedienen und prüfen – Bremsvorschrift. VDV 757:2015
4. Railway applications – Braking – Requirements for the brake system of trains hauled by locomotives (2018) EN 14198:2016+A1:2018
5. Brake – Braking performance (2014) UIC Leaflet 544–1, 6th Edition