Oxford will become the UK’s second 20mph city, it was decided today.

Oxfordshire County Council has approved a plan to introduce 20mph speed limits on almost all residential streets in the city.

The limits will apply to almost all residential minor roads within the city (excluding North Hinksey and Botley) and some sections of the main A roads and the B road network where there are busy shopping areas — particularly in the city centre.

Most major roads will remain at 30mph to keep the limits realistic as they are unlikely to reduce speeds significantly without extensive traffic calming measures.

The scheme will cost about £250,000.

County councillor Ian Hudspeth, Oxfordshire County Council's cabinet member for transport, said: "If this cuts speed by even a 1mph average that will deliver a five per cent reduction in casualties — nationally accepted speed statistics prove that. If this saves one life, it will have been worth it."