At 4.45pm on Saturday (December 3) a 72-year-old woman was in collision with a cyclist in Whittington Hill, Old Whittington.
She suffered breaks to her arm and leg and was helped by a young couple, who police believe were crossing the road behind her.
They may have been passengers on a bus, possibly the number 44.
The cyclist, a 45-year-old man, suffered serious head injuries. They both remain in hospital.
Witnesses or anyone with information should call PC 2858 Gary Wilson on 101 quoting reference 16000397883 or Crimestoppers anonymously on 0800 555 111.
Or send a message online by visiting the Contact Us section of www.derbyshire.police.uk/Contact-Us website.
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