A teen cyclist was left "laying in the road" after a hit-and-run in the early hours of New Year's Day (January 1).
Emergency services, including police and ambulance, were called to Trumpington Road shortly after 2am, to reports of a collision.
A witness has said she saw the 18-year-old man "laying in the road, while a man wearing hi-vis helped traffic flow".
She added: "It was horrible, I'm not usually out and about at that time. I want to know all involved are OK."
The cyclist was involved in a collision with a car, believed to be white Volkswagen polo, which then left the scene.
The teenager did not sustain any serious injuries, police have said.
Death and injury on Cambridgeshire roads
"Officers attended the scene with paramedics.
"An 18-year-old man was involved in a collision with a car, believed to be a white VW polo, which then left the scene.
"The man's injuries were not believed to be serious."
Anyone with information regarding this incident should call police on 101 quoting incident 94 of 1 January, or visit www.cambs.police.uk/report . Alternatively, contact Crimestoppers, anonymously, on 0800 555111 or via www.crimestoppers-uk.org .