Bendigo police have caught 14 people driving under the influence of drugs since Wednesday.
Acting Sergeant Kevyn Hume-Cook said Highway Patrol officers had been conducting random breath tests in Bendigo and surrounds since Wednesday.
He said a drug bus was at three Bendigo locations – Arnold Street and Creeth Street, Long Gully, and at Big Hill – over the weekend for the Groovin' the Moo festival.
Acting Sergeant Hume-Cook said police conducted a total of 1289 breath tests for alcohol and 160 tests for drugs.
He said no drink-drivers were detected but the detection of 14 drug-drivers was disappointing.
He said 11 offenders had been detected with amphetamine-based drugs in their system, and the other three offenders had been detected with cannabis.
Acting Sergeant Hume-Cook said the findings were disheartening.
"We've been raising the profile and saying that we're going to do more testing and to get drug-affected drivers in such a short stint makes us wonder why the offenders aren't getting the message."
He said that if people consumed drugs they should not drive for at least 48 hours.
Acting Sergeant Hume-Cook said police would continue to target drug-drivers and would increase their efforts to catch drug- and drink-drivers.