At around 9.15pm on Thursday 10 May 2012 the victim, a 39-year-old local man, was driving along Thanet Road in the direction of St Helens Bridge when a man deliberately ran into the side of his car.
The victim stopped to ask the man what he was doing and was head butted in the face, causing a cut to his upper lip.
The offender is described as white, aged between 18 and 20-years-old, 5ft 9in tall with a medium build.
He was wearing a black zip-up hooded top with a blue stripe down the side, black tracksuit bottoms and black trainers.
Officers are appealing to anyone who witnessed the incident to come forward with information.
PC Gemma Churchward, of Acomb police, said:
This was a pointless and unprovoked attack which left the victim with a facial injury.
I am hopeful that the unusual nature of the incident will have attracted someone’s attention and they will get in touch and help with our enquiries.
If you witnessed the incident or have any information about who was responsible please contact the police or Crimestoppers as soon as possible.
Anyone who can help officers with their enquiries is urged to contact North Yorkshire Police on 101 – select option 2 – and ask for Gemma Churchward or Acomb police.
Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111.
Please quote reference number 12120075392 when passing information about this incident.