Officers from Warrnambool, Hamilton and Portland used  a high-tech number plate recognition machine to detect  drivers with unregistered vehicles, licence irregularities and other offences.

There were 19 unregistered vehicles, 23 unroadworthy vehicles which had defect notices slapped on them, six unlicensed drivers, four seatbelt offences, one driver who did not have a required interlock device fitted and one driver who was using a mobile phone when pulled over.

Another 11 traffic offences were also detected.

Police also performed 1352 preliminary breath tests, with no offences.

The checks were carried out on the Princes Highway at Dennington on Wednesday and Pertobe Road in  Warrnambool yesterday.

Similar checks were held at Apollo Bay on the same days.

The number plate machine scans vehicles travelling in both directions. If  irregularities are detected police officers at both ends of the traffic blitz zone are alerted.

Leading Senior  Constable Ian Hatfield said checks would continue during  the summer holidays.

Police are also closely monitoring traffic on other roads. Earlier this week a driver was pulled over after clocking 140km/h on the Hamilton Highway.