A £6bn package of motorway improvements announced by Transport Secretary Ruth Kelly today is expected to bring improvements at junction 9 of the M40.

The busy junction where the A34 from Oxford meets the M40 and A41, at Wendlebury, near Bicester, is a bottleneck for traffic at peak times and the Highways Agency has been planning to carry out major work to improve traffic flow.

Ms Kelly said: "I am determined to get the best from our road network so that motorists have reliable journey times on roads that are safe and well-managed. The greatest barrier to this is congestion."

The announcement includes up to £6bn in funding for improvements to strategic national roads in the period up to 2014.

The Government announcement said work could start at junction 9 before 2014, but did not give a more precise time estimate.