Drug driving charges in Victoria are more common than most people realise. A routine roadside test. A positive oral fluid sample. And just like that, you’re facing a criminal charge under the Road Safety Act 1986 (Vic). It doesn’t matter if you felt fine behind the wheel. It doesn’t matter if the substance was in your system from days ago. The charge still lands. But a positive test isn’t the end of the story. When someone’s charged with a drug driving offence in Victoria, a drug driving lawyer looks at the whole picture, not just the test result. They examine how the stop was handled, whether the testing followed proper procedures, and whether the charge itself has been laid correctly. That process starts early, and it can make a real difference to the outcome. Let us learn more about what that defence work looks like. How Roadside Drug Testing Works in Victoria Victoria Police use oral fluid testing at the roadside. The test screens for three substances: THC from cannabis, methamphetamine, and MDMA. If the preliminary test comes back positive, a second sample is taken and sent to a laboratory for confirmation. Here’s what catches people off guard. These tests detect the presence of a drug. They don’t measure impairment. So someone who used cannabis days earlier can still test positive even though they’re completely sober at the time of driving. That distinction matters, and it’s something a defence lawyer will zero in on. Challenging the Testing Procedure Roadside testing has to follow strict rules. There’s a set process under the Road Safety Act 1986 (Vic), and if police don’t follow it properly, the results can be challenged. A defence lawyer checks everything. Was the testing device calibrated correctly? Was the oral fluid sample handled and stored the right way? Did the officer follow the correct steps before and during the test? If the chain of evidence has a gap or the test wasn’t carried out in line with the legislation, a lawyer can argue the results shouldn’t be relied on. The Difference Between Presence and Impairment This is a big one. Victoria has two main types of drug driving charges. The first is driving with a prescribed concentration of an illicit drug present in your system. The second is driving while impaired by a drug. They’re not the same thing. A presence-based charge doesn’t require proof that the drug affected your driving at all. An impairment charge does. The prosecution would need to show that the drug actually impacted your ability to drive safely. Knowing which charge you’re facing changes the entire defence approach. A lawyer will look at whether the charge reflects what actually happened or whether the prosecution has overreached. Prescription Medication and Drug Driving Not everyone charged with drug driving was using illicit substances. Some people test positive because of prescription medication. Certain painkillers, anti-anxiety drugs, and sleep medications can trigger a positive result or cause impairment without the driver even knowing. Under Victorian law, prescription medication can be a factor in your defence. If you were taking medication as directed by your doctor and had no reason to believe it would affect your driving, that’s relevant. A defence lawyer will gather medical evidence and prescriptions to support that position. What Happens With Penalties and Licence Loss Drug driving convictions in Victoria carry mandatory licence cancellation or suspension. The minimum periods depend on the specific charge and whether it’s a first or repeat offence. Fines apply too. And for some charges, the court may require completion of a Behaviour Change Program before your licence is restored. A defence lawyer’s role here isn’t just about fighting the charge. If a guilty plea is the most realistic option, they’ll work to get the shortest possible disqualification period. They’ll put together material that shows the court who you are beyond the charge. Work commitments. Family responsibilities. Steps you’ve taken since the offence. All of it goes into the plea. Why It’s Worth Getting Advice Early Drug driving charges move fast. The penalties are fixed in many cases, and the window to challenge the evidence narrows once you’re in court. Getting legal advice early gives you the best shot at identifying problems with the prosecution’s case before it’s too late. A positive roadside test feels final; it isn’t. Victorian law gives you the right to challenge the evidence, question the process, and put your case forward properly. That right means nothing if you don’t use it. The post Drug Driving Charges: What a Specialist Lawyer Does to Defend You appeared first on Santa Clarita Valley Signal. ...read more read less