Why does the USA do ‘sobriety field tests’ for suspected DUIs?

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When other countries (notably Europe) use roadside ‘Breathalyzer’ test machines? It seems a high-functioning drunk could get away with DUI in the US, when they wouldn’t in France or the UK?

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Anonymous 0 Comments

Because you can still be impaired, but not drunk. For example if you’re swerving all over the road, you might not be drunk, but might be having a stroke or eyesight issues or be on drugs or something, which is something that a breathalyzer doesn’t cover. Also, if the test comes back negative, that’s good news for the defense, whereas the officer saying “he was stumbling all over the place” is harder for a defense to refute.

Also, some states forbid breathalyzer tests because they think them unreliable (e.g. Kentucky)

Source:

[https://law.stackexchange.com/questions/65507/why-do-cops-in-the-usa-not-seem-to-use-the-technical-blow-into-device-test-for](https://law.stackexchange.com/questions/65507/why-do-cops-in-the-usa-not-seem-to-use-the-technical-blow-into-device-test-for)

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