To ask the Secretary of State for Transport, what recent estimate his Department has made of the total carbon emissions produced by the railway system in the last 12 months.
 The most recent data from the Office of Rail and Road (ORR) shows that the total CO2 equivalent emissions from the railway (passenger and freight traction) from 1 April 2021 to 31 March 2022 was 2,332 kilotonnes. 
Railways: Carbon Emissions