Nearly 80 per cent of people 20mph speed limits should be in force around school in residential streets and in village, town and city centres, according to a survey.
More than four in five people think traffic travels too fast on local roads, the poll by road safety charity Brake and Allianz Insurance found.
Of the 1,000 people surveyed, 78% backed the 20mph campaign run by Brake, with 72% saying roads in their town or village need to be made safer for walking.
Representatives from Brake will call on MPs to back its GO 20 campaign at Parliament today to make 20mph the standard urban speed limit.
Brake said that areas where 20mph limits have been introduced have seen casualty rates fall, with Portsmouth recording a 22% dip in casualties and Camden in north London seeing crashes reduce by 54%.
Other areas where 20mph limits have been imposed include the City of London, Birmingham, Newcastle upon Tyne and Edinburgh.
Brake deputy chief executive Julie Townsend said: “The GO 20 campaign is about defending everyone’s right to walk and cycle freely without being endangered, whether it’s to get to work, school, the shops, or just getting out and being active.
“We need to tackle the senseless and violent casualties that continue to happen daily on our roads, and we need to enable people to live healthy, active, social lives. It’s clear that 20mph limits in communities can help bring this about - and it’s clear this is what people want. “
Allianz Insurance chief executive Jon Dye said: “Public opinion is overwhelmingly in favour of reducing the urban speed limit to 20mph and this should act as a powerful force for change.”