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What is the instrument used by traffic police to test for drunk driving called?

1 Answers

CassidyLynn

07/29/25 11:11am

The instrument used by traffic police to test for drunk driving is called a breathalyzer. A breathalyzer is a device used to detect whether a person has consumed alcohol and to measure the level of alcohol intake. It serves as a tool for traffic police to determine the extent of alcohol consumption by drivers during law enforcement, effectively helping to reduce the occurrence of major traffic accidents. The detection principle of a breathalyzer: When an oxide with N-type conductivity is exposed to the atmosphere, the number of internal electrons decreases due to oxygen adsorption, increasing its resistance. Subsequently, if a specific reducing gas is present in the atmosphere, it will react with the adsorbed oxygen, increasing the number of electrons in the oxide and thereby reducing its resistance.

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