More than 100 Winnipeg drivers say they have been unfairly ticketed by a photo radar camera for speeding at a local intersection, according to two organizations.

The Canadian Taxpayers Federation and Wise Up Winnipeg, a group that opposes photo radar, say they want to hear from motorists who have received photo radar tickets at Grant Avenue and Nathaniel Street.

The two groups say they have heard from drivers who claim they have been ticketed for driving between 65 and 85 kilometres an hour on a street that has a posted limit of 50 kilometres an hour.

Colin Craig, who the Canadian Taxpayers Federation's director in the Prairies, said there is no way a vehicle could move that fast as soon as it turns onto Grant westbound at Nathaniel.

"Clearly something isn't right with the machine, and so we're urging people to not pay their tickets, as we're going to look at getting a group effort to challenge them in court," Craig told CBC News on Monday.

"Many people were at the [Grant Park] shopping mall or the high school and they had just turned onto Grant," he added. "The machine that was parked on a side road has clocked people driving at unbelievable speeds — speeds that most vehicles couldn't even reach in such a short distance."

People are speeding there, say police

But Sgt. Doug Safioles of the Winnipeg Police Service's traffic division said people are speeding at Grant and Nathaniel, and the photo radar technology is not to blame.

"It's not impossible," Safioles said.

"We checked it, had officers out there again today with lasers and the photo radar, watching the people turn the corner and accelerating and giving them multiple readings."

Some motorists on Grant and Nathaniel told CBC News they believe photo radar cameras are a cash grab, adding there's no way they could accelerate to 65 or 85 kilometres an hour so quickly after turning.

But some other drivers said they would like to see more photo radar cameras, as they believe many people are driving too fast down Grant Avenue.

A number of pedestrians have been struck by vehicles at that intersection, Safioles said.

Safioles said police have even stopped a few drivers in the vicinity and told them about how fast they were going as they were accelerating.

"It's very easy in that length of distance — it's hundreds of metres — to get your car up to that speed," he said.