Thames Valley Police is appealing for witnesses following a road traffic collision on the A416 Stoke Hammond by-pass.
At around 6.40pm on Saturday a silver Toyota Yaris travelling northbound was involved in a road traffic collision on the A4146 Stoke Hammond by-pass between the Linslade roundabout and Newton Longville roundabout .
The Toyota left the road, mounted a grass verge and sustained damage.
Officers are appealing for witnesses to come forward who may have seen the collision or who were travelling northbound towards Milton Keynes from the direction of Aylesbury and were over taken by a Black Audi S5 and a dark-coloured new-style Mazda saloon.
Investigating officer PC Liz Johnson, from the Joint Operations Unit for Roads Policing, said: “The 28-year-old female driver of the Toyota was not injured as a result of the collision but was left badly shaken.
“I would also ask the drivers of the Black Audi S5 and dark coloured Mazda saloon to come forward to assist police with their enquiries.”
Anyone with information about the collision should contact PC Johnson, based at Milton Keynes police station, via the Thames Valley Police Enquiry Centre on 101 quoting URN 1274 of 31/5.
If you don’t want to speak directly to the police, you can contact the independent charity Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court.