Buses: Exhaust Emissions

Department for Transport written question – answered on 7th September 2020.

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Photo of John McNally John McNally Shadow SNP Spokesperson (Environment)

To ask the Secretary of State for Transport, with reference to the Prime Minister's statement on Transport infrastructure of 11 February 2020, what assessment his Department has made of the potential effect of the funding for 4,000 zero emission buses on air quality.

Photo of Rachel Maclean Rachel Maclean Parliamentary Under-Secretary (Department for Transport)

To assess the impact of 4,000 Zero-Emission Buses (ZEBs) on air quality, the Department has analysed how various factors of air quality would change with changing the fleet. Using data from the TAG Databook, factors such as the cost of carbon, CO2, NOx and PM2.5 emissions have been considered. It must be noted that the change in air quality depends on numerous factors such as the model and age of the vehicle being replaced and the average speed of the vehicles. Definitive changes in air quality will depend on where the buses are deployed.

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