Average speed cameras will be introduced on two stretches of the A12 within nine months.

The government announced yesterday a £36bn investment package for infrastructure schemes across the UK.

Included in the list of projects with agreed funding is a traffic management scheme on the A12 at Kelvedon.

Average speed cameras will be installed between Rivenhall End and Easthorpe to encourage traffic to stick to the 70mph limit.

The aim of the scheme, which will cost approximately £983,000 to install, is to cut the number of accidents caused by speed and keep traffic flowing steadily in a bid to reduce congestion.

Work by the Highways Agency on the Pinch Point Programme project is set to begin in November and be completed by January next year, weather permitting.

Priti Patel, MP for Witham, said: “Essex is an engine of economic growth and the investment in the A12 at Kelvedon will help to alleviate traffic and congestion as well as improve safety.

“Our entire road network was ignored by the last Labour government and today’s announcement is good news and shows that Conservatives in government are listening to the people of Essex.

“I will continue to campaign with local communities, businesses and the county council to secure more upgrades to our road network.”

A second, similar, scheme for the A12 between the Essex border and Capel St Mary at Hughes Corner was also given financial backing in the Treasury announcement.

The £843,000 scheme will be installed between September and November this year between the Stratford St Mary and Dedham junction at the B1029 and at Holton St Mary at the B1027.

Yesterday prime minister David Cameron and chancellor George Osborne welcomed the total £36bn investment of public, private and combined funding for projects across the UK.

It is estimated the funding will support more than 150,000 construction jobs nationally.

Mr Cameron said: “Ensuring Britain has first class infrastructure is a crucial part of our long term economic plan: supporting business, creating jobs and providing a better future for hardworking people.

“As a crucial part of our long-term economic plan, this Government is backing business with better infrastructure so that more jobs and opportunities are created for hardworking people, meaning more financial security and peace of mind for families.”

Other Essex schemes to benefit from the Pinch Point Programme include a £1.5m Essex County Council scheme to widen Parkway at the Army and Navy roundabout, boosted by a £1.1m contribution from the Department for Transport.