Mr Brown said as well as the safety aspect, some checkpoints were being set up in areas where there had been several crimes reported as a "profile and deterrent" approach.
Several vehicles had been written off the road over the past month after being found without warrants of fitness, registration and "with various defects".
At one checkpoint in Harold Holt Ave about two weeks ago a van was seen being towed away which one resident watching described as being "not even fit to be on a farm track".
Apart from the standard fines, the owner was also required to pay for its towage and storage.
"It has always been the driver's responsibility to make sure their vehicle is up to scratch - our part is checking to make sure they are."
Mr Brown said the days of leniency and warnings were over and infringement notices were effectively now automatic.
In pursuit of people using mobile phones while driving or not wearing seat restraints police, in some circumstances, would use "spotters" who would call in an errant driver to the checkpoint ahead.
"If drivers abide by the law then they will have no issues.
"What we want is safe drivers and safe vehicles."