Nishan Fonseka admitted he was the driver but told a tribunal that he needed to accelerate to overtake a slower car and avoid a collision.

He also said he was unfamiliar with Mouat Street in Lyneham, where the camera van was parked.

Mr Fonseka was pinged going 82km/h in a 60km/h zone on the suburban street in November 2019.

He asked police to withdraw the fine and then for an internal review but was knocked back both times.

The driver, who had an unblemished record, took his case to the ACT Civil and Administrative Tribunal, where he also fell short of having the fine withdrawn.

Senior member Kristy Katavic said the offence of going 15km/h over the speed limit would generally not be withdrawn unless there were exceptional circumstances.

She said being unfamiliar with the road was not an exceptional circumstance, nor was needing to overtake slower cars.

"Unfamiliarity with a road may in fact be a reason to drive slower and observe the speed limit, which is the law," she said.

Ms Katavic doubted Mr Fonseka's account of what happened, accepting the evidence given by an ACT government official, saying it was "improbable" from the photograph taken by the camera that a car had been behind him, but obscured.

The tribunal senior member said in the decision published last week that the basis on which he challenged the fine was that "the placement of the van was revenue raising and a form of entrapment because he needed to exceed the speed limit to overtake a slow-moving vehicle to mitigate against any potential collision."

Whether Mr Fonseka considered the placement of the van "as revenue raising and entrapment does not detract from his actions and his failure to observe the posted speed limit", she said.

"It is not a reason to have the infringement notice withdrawn," she said.

The tribunal confirmed the police's decision not to withdraw the fine.

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