Detective Constable Karen Paterson is today remembered by Cambridgeshire Police Federation on the anniversary of her death.
Karen was aged 44 when she died on 6 January 2012.
She was on her way home from night duty at Peterborough when her car was in collision with another vehicle at Langtoft in Lincolnshire.
Federation branch chair Liz Groom said: “Today we pause to remember Karen and her contribution to policing in Cambridgeshire.
“The thoughts of Cambridgeshire Police Federation are with Karen’s family, friends, and colleagues.”