An action group has been set up on Facebook against the newly designed layout of the A329M between Reading, Wokingham and Bracknell.
The 'Fix the A329M' group is calling for the council to change what they say are unsafe modifications which are causing delays for drivers.
Highways England says it has put up signs and is monitoring ways of making improvements.
Wokingham MP John Redwood has stepped in saying it needs to be sorted out.
The A329 is closed in both directions due to serious accident between Thame Road and M40 J7 / A40 (Thame).Air ambulance is attending the scene of an accident involving a car and a motorbike
The A329 High Street at Ascot is closed in both directions after a serious accident between A330 Station Hill and A332 King's Ride. A car boot sale scheduled to take place on the High Street today has had to be cancelled because of the accident.
The A329 London Road at Bracknell in Berkshire is blocked after an accident involving three vehicles at the B3017 Swinley Road.