A car is mounted on the middle of a roundabout at the junction of New Street and Cambridge Street in Aylesbury.
The incident involved a red Micra, carrying two people, which smashed head on into one of the roundabout’s blue directional signs.
Police were called shortly after 11am. They coned off the approach to the roundabout from Upper Hundreds Way.
The extent of injuries suffered are unknown at this stage but the incident led to heavy traffic on routes approaching the roundabout.