US national Anne Sacoolas is to face magistrates in the UK charged with causing the death of motorcyclist Harry Dunn by dangerous driving.
Mr Dunn, 19, died when his motorbike was in a crash with a car near RAF Croughton, Northamptonshire, on 27 August, 2019.
The case would be heard at Westminster Magistrates' Court on 18 January, the Crown Prosecution Service said.
It is understood Mrs Sacoolas, 44, will appear by video link from the US.
Mr Dunn's mother, Charlotte Charles, said: "My family and I are feeling very emotional and overwhelmed, having just learned the news that Mrs Sacoolas is now to face our justice system.
"It is all that we asked for following Harry's death."
Mrs Sacoolas had diplomatic immunity asserted on her behalf by the US government following the collision, and was able to leave the UK after the incident.
Harry Dunn crash: Anne Sacoolas to face Westminster magistrates