A pensioner received two speeding fines in a matter of two minutes - and is now warning other drivers.
George Peck was travelling down the A379 into Plymouth in his Audi 25 when he was clocked twice along the same stretch of road.
The 70-year-old said he didn't realise the speed limit had changed from 40mph to 30mph as he approached Billacombe roundabout.
Two summons were then posted to his home - the first for 2.42pm on August 6, and the second at 2.44pm on the same day, reports PlymouthLive.
The first recorded speed was 36mph and the second 37mph.
Mr Peck says being punished twice for the same incident is a "waste of the court's time", but nevertheless has warned other motorists to "keep their speed in check" on the A-road.
According to police, average camera locations use two systems on the same stretch of road which are linked but still deemed separate locations.
This means one journey can see a driver snapped twice for what is essentially one offence.
Mr Peck said the first summons describes him being caught by a static camera and the other that he was maintaining an average speed between two points that exceeded 30mph.
The retiree can only recall one speed reminder between the two points, with one positioned a fair distance from the first camera.
He has been offered a speed awareness course for one summons but for the second he's been given three points and a fixed penalty notice of £100.
He said: "I understood that having exceeded the speed limit once I was due for a summons but I couldn't believe I was due for two.
"It seemed to me the system was wrong if that was happening. If somebody gets caught by one, they're almost certainly going to get caught by the other."
He continued: "I thought well these cameras are automatic so I can't be the only person this has happened to because if you misread the speed limit, which I did, I wasn't deliberately going faster than I should have done, I just thought it was a 40mph limit."
Mr Peck said the road safety team claimed the two points he was caught on were technically two separate roads - Elburton Road and Billacombe Road - but he said his letters only refer to the A379.
He suggests that they should either have multiple static speed camera or one set of average speed cameras on the road rather than both as "that will just cause problems".
"I just think it's a great pity when we're supposed to, and want to, support the police and their efforts, they can't show a little bit of common sense when dealing with what is a relatively minor offence.
"I can't believe it does anything except rub people's backs up the wrong way," he added.
A police spokesperson from the Devon and Cornwall Police's Road Safety Team said that as there is a roundabout between the systems and you can and will get recorded and reported for speeding on both average speed systems, if you exceed the speed limit from Elburton to the roundabout and then again from the roundabout down to the supermarket roundabout.
"Two systems means two speeding offences," they said.
They went on to say the force's road safety team has recently doubled its staff numbers, including speed detection officers and dash cam submission processors.
The aim is to make it "uncomfortable" for drivers committing such offences.
"The police should not apologise for the prosecution of drivers who exceed the speed limit," they added.