An investigation into the impact of installing a city-wide 20mph speed limit has been launched.

If the Brighton and Hove City Council review finds that the move would improve road safety without major detrimental effects on traffic flow, the new restriction could be imposed on all streets except key trunk routes.

The cross-party scrutiny panel will also consider the relative benefits of a reduced speed limit or other traffic calming measures.

It will be headed by Green councillor Pete West, who yesterday said: "The safety and well-being of local residents and visitors to the city is a high priority for the council. Ensuring that the speed limit on our city’s streets is appropriate will go a long way to increasing the safety of our roads.”

He will be joined on the group by Conservative councillor Geoff Wells, Labour leader Gill Mitchell and Lib Dem leader Paul Elgood.

The formation of the panel follows calls from campaigners and Green Party councillors to consider a citywide speed reduction like those implemented in other parts of Britain, including Portsmouth.

They came after a series of serious accidents on Brighton and Hove's roads, including the incident in Chalky Road, Portslade, where nine-year-old Henry Nugent died.

The panel will look at evidence of the effects of 20mph limits and zones on road safety, and the consequences on traffic movement and displacement.

It will make recommendations for policies to give to the council's cabinet for approval.

The panel will hold a series of public meetings in January and February, including one where residents and community groups will be invited to give their views. To take part email scrutiny@brighton-hove.gov.uk or call 01273 290450.