Victoria's top cop has admitted he was caught speeding on the Peninsula Link freeway, with a fixed camera detecting him driving at 108 km/h in a 100 km/h zone.

Chief Commissioner Graham Ashton said in a statement on Friday afternoon that he was informed the previous evening that he had received a speeding fine.

"I am deeply committed to road safety and am embarrassed and disappointed to find I have gone above the speed limit.



"This was as a result of a lapse in concentration, which does not excuse my actions, but does highlight the need for constant attention behind the wheel.



"Maintaining focus on the roads at all times is critical; a moments distraction on the road can lead to tragedy. My members see the results of these tragedies every day."



Mr Ashton was fined $190 and will get one demerit point. While he was detected at 108 km/h, the alleged speed was 105 km/h. He said he would donate another $190 to Road Trauma Support Services.

Mr Ashton was detected speeding at 5.38pm on December 13 while he was off duty, but driving his executive vehicle.