In Western Australia, driving with a blood alcohol concentration (BAC) of 0.05% or higher is illegal. While 0.05% may seem like a small amount, reaching this limit doubles the risk of a traffic accident compared to a sober driver. To enhance road safety, police can randomly stop any driver for an alcohol or drug test. Understanding the laws and penalties is essential to avoid serious consequences.
BAC Limits and Restrictions
- Novice drivers, those with an Extraordinary Licence, and drivers of buses, taxis, Uber vehicles, heavy vehicles, or vehicles carrying dangerous goods must maintain a 0.00% BAC limit.
- Any amount of alcohol can result in penalties for these restricted licence holders.
Drug Driving Laws in WA
Under WA’s Road Traffic Act 1974, driving with illicit drugs or impairing prescription medications in your system is strictly prohibited. Even legally prescribed medication can affect your driving ability and lead to penalties.
Penalties for Drink and Drug Driving
Penalties for drink and drug driving vary based on BAC levels and previous offences. Key penalties include:
- BAC 0.05-0.15%: Fines, demerit points, and possible licence disqualification. Repeat offences carry higher fines and longer disqualification periods.
- BAC 0.15% or higher: Severe penalties, including fines of up to $7,500, potential lifetime disqualification, and even jail time for serious or repeat offences.
- Drug driving: Similar penalties apply, with possible criminal charges for repeat or aggravated offences.
Key Considerations
- Many prescription and over-the-counter medications can impair driving. Check with your doctor if you are unsure whether a medication affects your ability to drive.
- Once charged, anything you say may impact your case. Seeking legal advice immediately is recommended.
Get Expert Legal Guidance
If you have been charged with drink or drug driving, expert legal advice can help you understand your rights and navigate the legal process.
At Rothschild Group, our experienced legal team provides comprehensive support to protect your licence and future.
Contact us today for a consultation on your case.

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