Know Your Limit: Blood Alcohol Limits

Know Your Limit: Blood Alcohol Limits

Know how your license type is effected by drinking

Drink driving is one of the most common and dangerous driving offences committed by motorists.  Depending on the license you hold and vehicle you’re driving, there are different blood alcohol limits which you must be under to safely drive. If you do blow above these limits during a breath or blood test you will face varying punishment depending on what reading is shown after the test. With this in mind it is very important to know what your limit is to avoid any trouble.


License Limits

All drivers holding a learner, P1 or P2 provisional, probationary or restricted license must have a reading of 0.00 when taking a breath test. This means they are not allowed to have any alcohol in their system while driving. This also goes for all class RE motorcycle license holders for the first 12 months of holding their class RE motorcycle provisional, probationary or open license.

All open license holders are allowed a limit of below 0.05. Any test which results in a reading of 0.05 or higher is considered an offence and you will be charged accordingly depending on how much you exceed the limit. This can range from a fine, license suspension, probation periods, a criminal charge or a combination of these. This is also effected whether you have had prior drink driving convictions or not.

All license holders must have a reading of 0.00 when in charge of the following vehicles in Queensland, Australia;

  • Truck or any vehicle over 4.5t
  • A bus (built or fitted to carry over more than 12 adults including the driver)
  • An articulated motor vehicle
  • A vehicle carrying a placard load of dangerous goods
  • A taxi, limousine or public passenger vehicle
  • A tow truck, pilot vehicle or escort vehicle escorting an oversized vehicle
  • A vehicle being used by a driver trainer to give driver training
  • A specially constructed vehicle, including a tractor

Queensland Alcohol Limits

In Queensland there are 4 alcohol limits which will determine the penalties applied if you are caught drink driving. Each limit has a blood alcohol content (BAC) range which will be a factor in determining the maximum penalties.

  • No alcohol limit – You will be over this limit if there is a concentration of alcohol more than 0 in your blood or breath
  • General alcohol limit – This limit is anything over 0 and less than 0.05. Anything equal to or over 0.05 will be considered over
  • Middle alcohol limit - This limit is anything 0.05 or over and less than 0.10. Anything equal to or over 0.10 will be considered over
  • High alcohol limit - This limit is anything 0.10 or over and less than 0.15. Anything equal to or over 0.15 will be considered over

Things To Consider

The best practise is if you’re are planning to drink, is plan not to drive. Have a designated driver if you’re out with friends or arrange plans to sleep at the party or somewhere nearby that doesn’t require you to drive. If you’re walking home, be aware of the dangers of walking home drunk. Stay safe by using footpaths, walk in lit up areas, walk in a group and cross at marked crossings or under streetlights where you are visible to oncoming traffic. If you choose to wait it out and sober up be very careful where you do so. As mentioned in the blog ‘Just Sleep It Off: Important Facts on Drinking and Sleeping in Your Car’ there are many rules which apply to sleeping in your car while intoxicated, and if caught in the wrong circumstances you will be charged with drink driving. At the end of the day, if you do really have to drive and you are unsure if you are over the limit, it is best to purchase a reliable breathalyser. Knowing what breathalyser is right for you is very important and could save you from any trouble with the law.