Three people have been charged with perverting the course of justice after a road accident in which three teenagers and a man were killed.
The three young victims were on a birthday outing for a friend
The boys died when the car they were in crashed head-on into another vehicle on Oxford's eastern bypass on 28 May. The fourth victim was in another car.
Rachael Edmund, 31, of Witney, Vincent Oweka, 26, of Rosehill and Chua Otunno, 38, of Southfield Park, face charges.
Police say they have not been charged with causing the crash.
They will appear at Oxford magistrates' court on Tuesday 2 August.
Ms Edmund has also been charged with permitting no insurance on a motor vehicle, while Mr Oweka also faces charges of driving with no insurance and driving whilst disqualified.
Liam Hastings, Josh Bartlett and Marshall Haynes, all 13, died in the collision on the A4142 on 28 May, which also killed the driver of another car, Howard Hillsdon, 21.
Seven boys were in the Citroen Xsara driven by the mother of one of the teenagers.