The whole of Hounslow could become a 20mph zone under new proposals.
The speed limit is already in force around many of the borough's schools, all of which will be part of a 20mph zone by May 2018.
The plans, which would see some through-roads in busy pedestrian areas subject to the limit, are due to be discussed in a public meeting at Hounslow Civic Centre next Tuesday (June 30).
Deputy council leader Amrit Mann said: "The evidence for reduced speeds is compelling - a 10mph reduction in vehicle speed can reduce the risk of collision by about 50%.
"In addition to the safety benefits, we are looking at whether making all residential roads 20mph, rather than having a patchwork of 20mph limits just around schools, will be clearer for drivers to know what speed limit applies where.
"Which roads would sensibly be exempt from 20mph limits? In the interests of safety, we need to get the right balance."
In 2013, Islington Council became the first London borough to introduce a blanket 20mph limit, excluding roads maintained by Transport for London.
Tuesday's meeting will include presentations from council officers and the police, a question and answer session, and the chance for one-to-one discusssions.
It will take place at the Civic Centre, in Lampton Road, Hounslow, from 5pm-8pm. Anyone who cannot attend will be able to find out more and have their say as part of a three-month public consultation due to run at www.hounslow.gov.uk from July 1 to September 30.
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