A woman accused of causing her partner's death in a car crash may have been driving too fast for the road conditions with a defective tyre, a court has been told.

Vicki Williamson, 36, and her partner Liam Thornton, of Aberdeen, were injured along with a young child when her Vauxhall Corsa crashed. Mr Thornton, 26, later died in hospital.

The accident happened on the A956 Charleston Flyover on the south of Aberdeen on August 12, 2014.

Williamson, of Dundee, went on trial at the city's sheriff court charged with causing death by careless driving but denies the offence.

Giving evidence on Wednesday, police sergeant Graham Mutch told the court the accident happened at the top of a sweeping bend on a slip road off the A90 Aberdeen to Dundee road.

The collision investigator said the road was wet at the time of the collision and an examination of the Corsa revealed the tread on the inner edge of the rear near side tyre was under the 1.6mm legal limit.

Collision investigators concluded the most likely cause of the collision was that the car was driven at an inappropriate speed on the corner for the conditions.