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How much alcohol is too much alcohol, if you plan to drive?

Here is what science tells us about drinking and driving.

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Alcohol slows down reaction time and compromises the multi-tasking demands of driving.

Alcohol slows down reaction time and compromises the multi-tasking demands of driving.

PHOTO: ST FILE

Teo Yik Ying

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Singapore recently announced that the drink-driving threshold will be tightened in 2026. The legal breath-alcohol limit will be lowered from the current 35 micrograms per 100ml of breath – equivalent to 0.08 per cent blood alcohol concentration (BAC) – to 15 micrograms, or roughly 0.03 per cent BAC.

The move follows a troubling 2025 in which road traffic fatalities were the highest in the past decade and included 12 deaths attributed directly to drink driving.

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