New 20mph zones to be launched
More roads are to have 20mph speed limits with safety cameras being upgraded to help police catch speeding offenders.
While councils around the UK introduce more and more 20mph zones, in London mayor Boris Johnson has announced eight locations in the capital where new 20mph limits will be trialled.
The first pilot location is Commercial Street in Tower Hamlets while other sites include Westminster Bridge, Brixton town centre in south London and Earls Court Road in west London.
In 2013/14 more than 170 miles of London roads have had the 20mph limit introduced and almost 25% of all roads in the capital are now 20mph.
Islington, Camden and the City of London are London boroughs where all roads are 20mph, with Hackney planning to join them next year.
Safety cameras across London are being upgraded to new digital cameras which will have the capability to help police enforce the lower limit.
Mr Johnson said: "Lower speeds have the potential to significantly improve road safety while enhancing the environment for walking and cycling."
He added that he was also looking " to see where further 20 mph limits could provide significant benefits".
Transport for London surface transport managing director Leon Daniels said: "Piloting 20mph speed limits form a key part of our continuing work to make central London safer, pleasant and more attractive for all."
Matt Winfield, London deputy director for transport group Sustrans said: "This is a bold move from Transport for London to improve some of the capital's busiest streets."
Outside London, 20mph zones are proliferating. From April next year, 20mph restrictions will be put in place in Edinburgh city centre and in parts of western Edinburgh.
Other areas where more 20mph limits have recently been introduced include Manchester, Croydon in south London, Slough in Berkshire, Cambridge and Derby where drivers in 40 streets have to observe the lower limit.
The Department for Transport (DfT) is responsible for motorways and major A roads, while local authorities look after the rest of the road network.
A DfT spokesman said: "It's up to local authorities if they want to bring in more 20mph limits. We can give advice to councils on speed limits. The limit for each road has to be realistic."