Ken Livingstone reaffirmed plans to designate all residential streets in the boroughs as 20 mph zones in a bid to cut road deaths in the capital.

Mr Livingstone met with local residents and road safety campaigners in Kings Cross on Friday to discuss his transport policies, pledging to do more to reduce the number of road casualties in London.

During the last eight years there has been a 40 cent reduction in the number of people killed and injured on London roads, according to Livingstone.

The Labour candidate said he was committed to seeing that number rise to 50 per cent by 2010 and to 60 per cent in cases of under-16s being victims of road deaths.

"To bring about an even further reduction in casualty numbers I will be working with London's boroughs to designate all residential streets as 20 mph zones," he said.

I will continue to support more safe pedestrian crossings.

"Our success so far is the result of comprehensive policies to support pedestrians, including giving pedestrians longer to cross at traffic lights - even if it means cars have to wait a few seconds longer."

Liberal Democrat candidate Brian Paddick said Mr Livingstone's claims of improving road safety as a result of his actions were misleading.

"In fact, things like the 20mph speed limit are a matter for local authority over which the mayor has no control," he told the BBC.