A woman was punched in the face by a fellow motorist who repeatedly cut her off and forced her car to stop on the A1.
The man was erratically driving a blue Ford Puma on the road through the village of Long Bennington, said Lincolnshire Police.
He stopped his car, bringing the woman to a halt also, before getting out and exchanging words with her.
The man is then said to have punched the woman in the face and driven off along the A1 towards Grantham.
Police have released an image of the male driver in an appeal for witnesses and dash cam footage.
He was described as being white, in his late 60s to early 70s, around 5’3 tall and of medium build.
A spokesperson for the force said: "We are appealing for witnesses and dash cam footage after an alleged assault on the A1 at Great North Road, Long Bennington."
They added: "We believe the male pictured may be able to help us with our enquiries.
"If you know him or where he might be, or recognise the vehicle, please get in touch."
The alleged assault took place at roughly 11.30am last Wednesday.
Earlier this year, Motorfinity asked police forces in cities throughout England and Wales for the number of road rage incidents recorded in 2021.
Cardiff came top in the survey, with 301 incidents logged by police, followed by Leicester at 291, Birmingham, Coventry and Wolverhampton at 240 and Lancaster and Preston at 191.
Motorfinity CEO Daniel Briggs said at the time: “These results show that some cities are clear hotspots when it comes to angry or impatient drivers.
“All of the top 10 are very busy urban areas, but it doesn’t necessarily follow that more motorists means more anger. Instead, the fact that the top few cities are so far ahead suggests that drivers may unknowingly copy each others’ bad behaviour.
“It’s never pleasant to be on the receiving end of road rage, but it’s also pretty unpleasant to be a regularly angry driver. Motoring should be an enjoyable experience, or at least one that people don’t dread.
“Given that road rage is generally considered commonplace, it’s likely that someone experiencing it has also been on the receiving end of another driver’s anger at some point. So it’s worth remembering that a car door probably doesn’t insulate your emotions as much as you first think.”
Anyone with information in relation to the incident on June 20 is urged to call 101 quoting incident 136 of 20 June.