Road Policing Assistant Commissioner Glenn Weir was nabbed going 58km/h in a 50km/h zone at Parkville, in Melbourne's inner north, on February 29.
A mobile speed camera picked up Mr Weir's unmarked police vehicle travelling on Manningham Street at 10.55am.
Mr Weir said he was on the way to a meeting at the time and believed he was driving in a 60km/h zone.
Glenn Weir was caught driving at 58km/h in a 50km/h zone in Melbourne. (Brendan Esposito/AAP PHOTOS)
"I take full responsibility for this error and am mortified it has occurred," he said.
"I've spent my entire career advocating for road safety and this incident proves nobody is immune from making a mistake on the road."
Mr Weir received a $337 fine on Friday along with one demerit point.
"No matter how far over the limit, all speeding is unacceptable," he said.
"For someone in my position this is especially true.
"I am truly sorry."
The fine come months after Mr Weir pleaded with Victorian drivers to obey road rules following a flurry of deaths over the holiday period.
Sixteen people lost their lives on Victorian roads between December 15 and January 1 despite a statewide police operation.
It took the total number of road deaths across the state in 2023 to 296, the highest figure since 2008.
In all, 19,386 traffic offences were detected during the 18-day operation, including 7631 speeding offences.
Mr Weir said at the time the number of driving offences detected was unacceptable.
"As we enter a new year, we're appealing to motorists to reflect on their habits behind the wheel, take responsibility for their actions and prioritise their safety, as well as the safety of their passengers and all other road users," he said.
"We'll be doing all we can to ensure that we don't have another year on the roads like we had in 2023."
Victoria Police said Mr Weir would pay the fine despite being eligible for a warning because of his good driving record.
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