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1569093

	registered interest
	date	20/01/2023
	answering body	Department for Transport
	answering dept id	27
	answering dept short name	Transport
	answering dept sort name	Transport
	hansard heading	Motor Vehicles: Exhaust Emissions
	house id	2
	legislature	25277 pref label House of Lords
	question text	To ask His Majesty's Government what assessment they have made, if any, of the effects of low emission zones in urban areas on (1) vehicle usage, (2) average vehicle speeds, (3) average vehicle journey times, (4) emissions levels, and (5) overall air quality.
	tabling member printed	Lord Campbell-Savours
	type	WrittenParliamentaryQuestion
	uin	HL4933
	answer	answer is ministerial correction date of answer 03/02/2023 answer text <p>The Government has commissioned a robust evaluation programme for the collection and analysis of air quality, traffic, and behavioural insights data from Local Authority areas implementing measures for the reduction of nitrogen dioxide (NO<sub>2</sub>). Case studies give further understanding of how local plans are affecting local groups and businesses.</p><p>The Government has published a series of annual reports which set out and discuss the analysis of these evaluation findings. Headline findings from these reports and other analyses give an insight into the effects of Clean Air Zones and other measures on air quality and vehicle fleets in Local Authorities. The 2021 annual report is available to view on the Defra Science Search - AQ0851.</p> answering member printed Baroness Vere of Norbiton question first answered 03/02/2023 15:02:36 answering member 4580 label Biography information for Baroness Vere of Norbiton
	tabling member	499 label Biography information for Lord Campbell-Savours

1569092

	registered interest
	date	20/01/2023
	answering body	Department for Transport
	answering dept id	27
	answering dept short name	Transport
	answering dept sort name	Transport
	hansard heading	Motor Vehicles: Exhaust Emissions
	house id	2
	legislature	25277 pref label House of Lords
	question text	To ask His Majesty's Government whether they have made an assessment of the effects of (1) vehicle speeds, and (2) journey times, on emissions in urban areas; and if so, whether higher (a) vehicle speeds, or (b) journey times, have a greater effect on emissions levels.
	tabling member printed	Lord Campbell-Savours
	type	WrittenParliamentaryQuestion
	uin	HL4932
	answer	answer is ministerial correction date of answer 03/02/2023 answer text <p>The Government has commissioned studies to assess the impact of vehicle speed on emissions, for example undertaking a high-resolution emission modelling approach to understand changes in vehicle speeds and how it relates to emissions. The Department uses the best available evidence to model emissions in urban areas, including evidence linking vehicle speeds with emissions based on international guidelines. The evidence is that the factors influencing emissions are complex and the relative impact of vehicle speed, acceleration/deceleration and distance travelled (which are all related to journey times), will vary depending on the local situation.</p><p> </p><p>In addition, the Government’s Joint Air Quality Unit helps local authorities to calculate NOx emissions in their local areas using outputs from traffic models, which use a range of parameters including speed and distance travelled (which influence journey time) and the number of vehicles. The results of these parameters are contained in their Full Business Cases which are all published documents.</p> answering member printed Baroness Vere of Norbiton question first answered 03/02/2023 15:03:29 answering member 4580 label Biography information for Baroness Vere of Norbiton
	tabling member	499 label Biography information for Lord Campbell-Savours