Dunedin police are searching for a motorist who hit a cyclist in what appears to be an incident of road rage in the central city.

Photo: Google

Police say the cyclist was riding his bike in George St on Sunday when he was hit from behind by a blue Subaru station wagon while stopped at a red light at the intersection with St Andrew St about 3.30pm.

The tyre of the bike was stuck under the car as a result of the impact and as the cyclist tried to free it, the male driver of the vehicle began tooting his horn, Senior Sergeant Darryl Lennane said.

"The cyclist managed to free his bike and as he did so, the driver accelerated into him," he said.

"The victim moved to the side of the road while the motorist drove away north on George St.

"Thankfully, the cyclist was uninjured and his bike was not damaged, however, this behaviour is completely unacceptable and we want to locate the driver of the car involved."

The male driver was the only person in the car.

The victim said others were in the area at the time and witnessed the altercation and some even appeared to be filming or photographing the incident on their phones, Mr Lennane said.

"Unfortunately none of these people have contacted police at this stage.

"We really want to hear from these people in order to piece together more information about what happened.

"If you were in the area at the time and believe you witnessed this incident, please contact Dunedin police immediately on 03 471 4800."