Legal Limits

Drink driving limits are set by law, and each country on these pages writes them in its own units. BAC limit by state goes through all 50 states and D.C., with the higher-penalty tiers and the lower lines for young and commercial drivers. The UK page puts the two limits in force across its four nations side by side, in breath and in blood. The Australia page covers each state and territory and the drivers who must stay at zero. Every table carries the date its limits were checked.

  • BAC Limit by State 2026

    The BAC limit by state is 0.08% for adult drivers in 49 states and DC, and 0.05% in Utah. See the higher-penalty BAC tier each state adds above it.

    Updated on

  • Drink Driving Limit UK

    See which drink driving limit UK law sets in each nation: 35 µg of alcohol per 100 mL of breath in most of the UK and 22 µg in Scotland since 2014.

    Updated on

  • Drink Driving Limit Australia

    The drink driving limit Australia sets is under 0.05 on a full licence and zero for L and P platers. See which other drivers must be at zero too.

    Updated on