Delays on A34 at Chieveley after accident blocked carriageway
One lane was reopened a 5.19pm, however the accident was first reported to Thames Valley Police at around 4.20pm.
A black BMW and one other car were involved.
It is thought to have been a damage-only accident with no injuries reported as yet.
Recovery of the vehicles is now underway.
Motorists should use an alternative route where possible.