However, CTC highlighted the benefits of blanket implementation versus what it called the "patchwork" approach of 20mph zones.
CTC's Campaigns and Policy Director Roger Geffen said: "The adoption of 20mph as the default speed limit in urban and residential areas is the opportunity to redefine the spaces between our homes, changing them from 'roads' to 'streets'. With lower speeds, dangerous thoroughfares become public spaces where it’s easier to walk, cycle, socialise and play. People know more of their neighbours in low speed streets and property prices are higher, while 20mph is enough for vehicles to make progress."
He added: "Blanket 20mph beats a patchwork of zones: residents see a bigger return because more people buy in."
Many of the continental towns and cities where cycling is a popular mode of transport have 30 km/h speed limits, equivalent to 18.6mph.
CTC, the national cycling charity, with 68,000 members across the UK, is both the oldest and largest cycling body in the UK, established in 1878. CTC provides a comprehensive range of services, advice, events and protection for its members and works to promote cycling by raising public and political awareness of cycling’s health, social and environmental benefits. Information on CTC is available at www.ctc.org.uk .
The Instute of Advanced Motorists' press release reporting the results of its poll can be read at:
The results of the IAM survey come on the same day as the The University of East Anglia publicised the launch of a new national project to reduce the carbon footprint of the National Health Service, in which doctors will be encouraged to prevent diseases caused by "obesogenic built environments".
Blanket 20mph could give more parents the confidence to allow kids to walk to school. Research was published when schools broke up for the summer holidays, showing that less than half of children regularly walk to school.