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A review of 20mph speed limits in Bristol will be launched next week to assess how well it is working in communities across the city.

Councillors will be working with Bristol City Council colleagues to capture views from local residents and to see whether there is anything that can be done better, ensuring the speed limit is working as well as it possibly can.

The review will begin on Wednesday 20 June for ten weeks with an online consultation available at (please note this link will go live on 20 June) and paper versions can be requested by emailing or found in local libraries.

The review will adopt a consistent citywide approach, examining both strategic and local residential streets in each ward.

Marvin Rees, Mayor of Bristol, said:

“As promised in my manifesto, this review will give people the opportunity to help us assess the effectiveness of 20mph in each area. We’ve been listening carefully to feedback from the public, councillors, police and other stakeholders, alongside our own evidence from monitoring reports, to create a long list of locations highlighted for review.”

Roads not included in the initial review list can still be commented on and all results from the consultation will be analysed and considered by the council. The review asks people to consider both 20mph and 30mph roads, with an option to retain the current speed limit.

Any change in speed limit will need to be supported by evidence and would be subject to a formal statutory consultation before implementation. The evidence will be considered in the context of findings from the Bristol Twenty Miles Per House Limit Evaluation (BRITE) study by the University of the West of England (UWE), which was published earlier this year, and used individual speed data from over 36million vehicle observations.

Cllr Mhairi Threlfall, Cabinet Member for Transport and Connectivity, added:

“Evidence shows that slower speeds reduce the number and severity of collisions on our roads and the 20mph monitoring report has shown that, on average, speeds on more than 100 surveyed roads have significantly reduced since 20mph limits were introduced. We’re keen to build on this research which is where the reviews come in to take on board feedback from residents. Please make sure you have your say during the consultation process.”

The review is only looking at changes to speed limits rather than physical changes like speed bumps or traffic calming. If residents identify a need for such interventions, recommendations will go to the council and local councillors for further consideration.

During the review councillors will promote Community Speedwatch, which is a police and council initiative designed to give local people the ability to actively get involved in road safety in their neighbourhood. Residents volunteer to monitor speeds using speed detection equipment and record details of any vehicles travelling over the limit to share with the police.

For more information on the consultation go to (please note this link will go live on 20 June) and for more on community speedwatch go to

•    20mph speed limits were introduced in Bristol in 2014 and 2015, following a pilot scheme in 2010 and full council approval for a city-wide roll out in 2012.
•    Data for the Bristol Twenty Miles Per House Limit Evaluation (BRITE) report was collected by Bristol City Council officers and collated and assessed by UWE. More than 100 city roads were studied over a three year period to make sure that figures are comprehensive and have not been affected by seasonal and weather variations or other similar factors.
•    Speed was measured using Automated Traffic Counts, which involved placing a speed reading strip across the estimated fasted point of the road being surveyed, and measuring the speed of vehicles during a 24 hour period. Trafficmaster data was also used, which uses GPS technology to measure the average speeds of vehicles during their entire journey on the road being surveyed.
•    For the full BRITE study report visit


Original News from Bristol City Council website:

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