I'm writing to request under the terms of the Freedom of Information Act the following information, which I cannot find in your online reference sources: • The total number of buses operating as part of TfL's contracted London bus fleet, per year for the last ten years. • The total number from among each annual total of buses, per year for the last ten years, operating within the congestion charge zone. • The total number of vehicles operating in TfL's support fleet, per year, for the last ten years. • The average CO2 and NOx emissions figures for buses operating as part of TfL's contracted London bus fleet, per year, for the last ten years.

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Our ref: FOI-2076-1718/GH

Thank you for your request received by Transport for London (TfL) on 25 October 2017 asking for information about buses.

Your request has been considered under the requirements of the Freedom of Information Act 2000 and our information access policy. I can confirm that we do hold the information you require.

The total number of buses operating as part of TfL's contracted London bus fleet, per year for the last ten years.

Fleet information from 2011 is available from our website here: http://content.tfl.gov.uk/fleet-audit-30-june-2017-final.pdf

Prior to this time we have a we only hold limited information which is shown in the table below. (PVR stands for peak vehicle requirement).

The total number from among each annual total of buses, per year for the last ten years, operating within the congestion charge zone.

We do not hold data in a way which would readily tell us about the bus types that operated in the Congestion Charge Zone for the past 10 years. However, our latest published data on the link above shows the routes and for the past couple of years you may be able to work this out by identifying the bus routes into the CC area and using the data from the link.

The total number of vehicles operating in TfL's support fleet, per year, for the last ten years.

Please see the table below for TfL’s support fleet of vans, cars and HGV’s.

Year	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017
Total	1596	1582	1456	1309	1319	1345	1314	1264	1222	1161

The average CO2 and NOx emissions figures for buses operating as part of TfL's contracted London bus fleet, per year, for the last ten years.

uel	Body type	Emission standard	Approx Euro Std intro date	NOx (g/km)	CO2 (g/km)
Diesel	Single-deck	Euro II	1996	11.429	1032.0
		Euro III	2001	12.335	1128.8
		Euro IV	2006	8.653	974.8
		Euro V/EEV	2009	8.142	942.2
		Euro VI	2014	0.670	936.4
	Double-deck	Euro II	1996	11.914	1290.2
		Euro III	2001	15.455	1429.5
		Euro IV	2006	10.418	1370.0
		Euro V/EEV	2009	10.555	1326.1
		Euro VI	2014	0.624	1349.3
Hybrid	Single-deck	Euro IV	2006	15.852	726.6
		Euro V	2009	4.533	784.5
		Euro VI	2014	0.504	784.0
	Double-deck	Euro IV	2006	8.792	856.1
		Euro V	2009	8.900	866.7
		Euro VI	2014	0.201	938.1
New Routemaster	Double-deck	Euro V	2009	2.048	690.2
	Double-deck	Euro VI	2014	0.456	675.1

If this is not the information you are looking for, or if you are unable to access it for some reason, please do not hesitate to contact me.

If you are not satisfied with this response please see the attached information sheet for details of your right to appeal.

Yours sincerely

Graham Hurt

FOI Case Officer

FOI Case Management Team

General Counsel

Transport for London

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