Transcript
Here’s what you need to know about drug driving.
Drug driving offences occur when someone is found to have illicit drugs in their system whilst driving. Police use roadside saliva tests to check for substances like cannabis, methamphetamine, and ecstasy. If the test is positive, you may be required to give a second sample for confirmation. The penalties for drug driving include fines, licence suspension, and mandatory programs. Unlike alcohol, there’s no prescribed or safe limit for having drugs in your system – any trace may lead to you being charged by police. The law is designed to ensure that all drivers on the road have no drugs or illicit substances in their system.
This is general information only. If you’ve been charged with drug driving, get advice from a lawyer straight away.
Drug Driving Laws in Victoria
Victoria Police conduct roadside drug tests across Melbourne and regional Victoria. A positive result can lead to a criminal charge even if you felt completely unaffected while driving. This video explains how police detect drug driving, what happens after a roadside saliva test, and why Victorian drug driving laws operate on a strict presence-based model for certain drugs. If police have returned a positive test, laid a charge, or suspended your licence, understanding the process early can significantly affect the outcome.
How Drug Driving Offences Work
In Victoria, drug driving laws operate very differently from drink driving laws. Police do not need to prove that your driving was poor, dangerous, or impaired. The most common offence focuses solely on whether the prescribed concentration of a drug was present in your blood or oral fluid while you drove or remained in charge of a vehicle.
Presence-Based Drug Offence – Section 49(1)(bb)
Section 49(1)(bb) of the Road Safety Act 1986 (Vic) creates the offence. It applies when the prescribed concentration of a drug, or more than that concentration, is present in a driver’s blood or oral fluid. In practice, this operates as a strict presence-based offence. Victoria Police target specific drugs through roadside testing, including THC (cannabis), methylamphetamine (methamphetamine), and MDMA (ecstasy). For drugs tested at the roadside, the legislation does not operate on a graduated concentration scale. A detected presence of a prescribed drug can be sufficient for police to lay a charge.
Roadside Saliva Testing Process – Section 55E
Police obtain evidence through oral fluid testing under section 55E of the Road Safety Act 1986 (Vic). An officer can require a driver to provide a saliva sample using a prescribed testing device. The officer can also require the driver to remain while the testing occurs. If the initial test indicates the presence of a prescribed illicit drug, police require a further oral fluid sample. The legislation governs how police divide that sample. Police must provide part of the oral fluid sample to the driver, with the remaining portion used in accordance with the evidentiary requirements of the Act. The prosecution relies on the laboratory analysis as confirmatory evidence.
Drug Presence vs Drug Impairment
Many drivers assume that the absence of impairment means the absence of guilt. That assumption leads to costly decisions at the roadside and later in court. The law creates a separate pathway for impairment-based allegations. Section 49(1)(ba) deals with driving while impaired by a drug. In those cases, police rely on observations, impairment assessments, and surrounding circumstances. The charge police choose shapes how the case proceeds and how a lawyer can defend it.
Court Process and Licence Suspension
Drug driving matters usually proceed in the Magistrates’ Court. Consequences often begin before the first court date. Police may issue a written notice suspending a driver’s licence after laying certain drug driving charges. That suspension can remain in force until the court finalises the matter, even if the driver has not yet appeared.
Penalties for Drug Driving in Victoria
Penalties depend on the charge and the driver’s history. They can include fines, licence disqualification, and mandatory education or behaviour change programs. Separate offences apply if a driver refuses to provide an oral fluid sample, refuses to stop, or fails to comply with police directions. Refusal offences can carry very serious licence consequences, which may exceed those imposed for a first presence-based drug driving offence.
Medicinal Cannabis and Driving Laws
Medicinal cannabis has become an increasingly relevant issue in Victorian drug driving cases. Since 1 March 2025, section 50(1F) gives courts discretion in certain cannabis-related offences. The court may consider evidence that the driver held a valid prescription and used the medication in accordance with that prescription or authority. This reform does not prevent police from laying charges. It does not legalise driving with THC in the system. It affects how a court may sentence in appropriate cases.
Common Mistakes Drivers Make
Common mistakes include making admissions at the roadside, assuming a positive test cannot be challenged, and pleading guilty without understanding mandatory licence consequences. Many drivers also misunderstand the concept of being “in charge” of a vehicle. That concept can apply even if the driver travelled only a short distance or remained stationary while controlling the car.
Why Early Legal Advice Matters
If police charge you with drug driving, get legal advice immediately. Keep all paperwork, including any notice of suspension. Record the timeline while events remain fresh. A lawyer can assess whether police followed the required procedures, whether the charge matches the evidence, and what steps can protect your licence and your future.
