Almost 30 people a day were caught speeding on Brimbank roads during a recent four-day police operation aimed at reducing road trauma.

Operation Argus ran from 12.01am on Thursday, September 5 to 11.59pm on Sunday, September 8 in response to the high number of people killed on Victorian roads this year.

Road policing command acting Assistant Commissioner Tim Hansen said Operation Argus targeted the main causes of road trauma including driver impairment, fatigue, speeding, distraction and seat belt offences.

In Brimbank, 282 traffic offences were detected over the four days, including 118 drivers who were caught speeding.

Among them was a 30-year-old Maddingley woman who was caught driving at 129km/h in a 100km/h zone on the Western Freeway at Derrimut on September 8.

Police said the woman also had a suspended licence. Her car was impounded and she will be charged on summons.

Fifty drivers were detected using their mobile phone while driving, while 33 were found to be driving unregistered vehicles, 18 were unlicensed and three people were found to be drink-driving.

Police also stopped 28 motorists for seat belt offences and 13 cars were impounded.

Nineteen cyclists were stopped by police for a range of offences.

Acting Assistant Commissioner Hansen said it was disappointing to see so many motorists continuing to engage in risky behaviour.

“Victoria Police invest significant resources into road policing but we also need the community to work with us,” he said.

“There is absolutely no excuse when it comes to drink and drug driving, speeding or using your mobile phone while driving.

“Road trauma is avoidable. It’s only a matter of time before … the law catches up with you or you experience the devastating consequences.”