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What is the criterion for drunk driving?

The criterion for judging drunk driving is the threshold of alcohol content in blood. The threshold is greater than or equal to 20mg/ 100m and less than 80mg/ 100m, which is regarded as drunk driving. If it is greater than or equal to 80mg/ 100m, it is deemed as drunk driving.

legal ground

Threshold value of alcohol content in blood and exhaled gas of automobile drivers and test 4 alcohol content value

4. 1 alcohol content threshold

See table 1 for the threshold of alcohol content in blood of vehicle drivers after drinking or driving after drinking.

Table 1 threshold of blood alcohol content of automobile drivers

Driving behavior category threshold

Driving behavior category

threshold value

(mg/100 ml)

drunk driving

≥20,