A police constable has said he is "lucky to be alive" after his knife-proof vest protected him from a motorist who stabbed him four times.
Pc Matt Duce was attacked by a man brandishing a knife
Pc Matt Duke was attacked by a man after he pulled over a Subaru Legacy car on the A428 at Children Gate, Cambs, on Sunday.
He was stabbed, and then knocked to the ground, suffering only minor injuries.
Two years ago Cambridgeshire Police made it mandatory for officers on patrol to wear stab vests.
On Thursday, Pc Duke said: "The driver got out of the vehicle and engaged in conversation with me.
"The next thing I knew he was coming at me and had stabbed me several times, before eventually knocking me to the ground.
Cambridgeshire Police have issued an e-fit of the attacker
"Looking back on the attack now, I realise that I am lucky to be alive."
Reading a statement, he added: "This has also been a difficult time for my family and friends as they have to deal with the realisation that I could have been killed."
Pc Duke, an officer for seven years, is currently on leave.
Det Ch Insp Dan Vajzovic said the car had been stopped because Pc Duce had noticed a defective rear off-side light and it was missing a rear number plate.
Police issued an e-fit of the attacker and appealed for anyone who has information to contact officers.
Det Ch Insp Vajzovic said: "I would ask members of the public to study this e-fit closely. Do you recognise this man?
"He is described as white, in his late thirties to early forties; he was six foot tall, of a large stocky build and had a ruddy complexion.
"He spoke with a local accent and had dirty blond scruffy collar length hair. He was wearing a gold thick ring and a beige T-shirt.
"We are also interested in tracing the vehicle involved in this incident it is described as a bright red Subaru estate car, possibly a Legacy model.
"The car was distinctive in that at the time of the incident it had a defective rear off side light and no rear number plate."