FOI request detail

Freedom of Information

Request ID: FOI-2271-1617
Date published: 16 March 2017

You asked

Over the last 5 years (split into yearly reports) - - Pollution levels in the CC London zone - Vehicle volumes in the CC London zone - Traffic light sequence changes in the CC London zone - average speed limits in the CC London zone based on 30mph and 20mphs where 30mph has been changed to 20mph - Breakdown of the Congestion Charge revenue distribution with TFL - What percentage of the road network within the congestion charge has been given to all cycle lanes

We answered

Our ref: FOI-2271-1617


Thank you for your email received on 18 February 2017 asking for information about Congestion Charging.


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 some of the information you require.


All revenue generated by the Congestion Charge is re-invested in transport in the Capital. Over the last 14 years, the £1.7bn net revenue has been generated and re-invested in the Capital’s transport infrastructure. Some £1.3bn of has been spent on improvements to the bus network, £196m on roads and bridges, £80m on road safety, £90m on local transport/borough plans and £64m on sustainable transport and the environment.


For the first five years after the Congestion Charge was implemented, we were required to publish dedicated Impacts and Monitoring Reports which are available on the Congestion Charging Monitoring and Research section of our website at: Information about the Congestion Charge since 2009 is now incorporated into the Travel in London reports which are available on our website at:, and which also include information about traffic flows.  It may also be useful to refer to our quarterly Congestion Charging factsheets which are published in the Finance, Operations and Performance section of our website:


Information on pollution levels is also published in reports which are available from our website here:


You may also find the GLA’s Air Quality Strategy pages useful:


We do not hold the information regarding traffic signal changes or percentage of cycle lanes within the zone in a way which would enable us to answer your request. We would therefore need to manually compile this information from our records, and this work would exceed the ‘appropriate limit’ of £450 set by the Freedom of Information (Appropriate Limit and Fees) Regulations 2004.


Under section 12 of the FOI Act, we are not obliged to comply with a request if we estimate that the cost of determining whether we hold the information, locating and retrieving it and extracting it from other information would exceed the appropriate limit. In this instance, we estimate that the time required to do this would exceed 18 hours which, at £25 per hour (the rate stipulated by the Regulations), exceeds the ‘appropriate limit’.


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


Yours sincerely


Graham Hurt

FOI Case Officer

FOI Case Management Team

General Counsel

Transport for London

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