Bodycam footage shows a woman slurring her words while talking to police after crashing her car on her way home from a friend's house in June. She vehemently...
Saliva would require a warrant, but they can require a breathalyzer test without a warrant. Breathalyzers need to be regularly calibrated, so it could partly be laziness in that regard. But I’m pretty sure it’s mostly because they want to prove you are not safe to drive regardless of your blood alcohol content. The longer the stop, the more opportunity there is to find something against you.
Saliva would require a warrant, but they can require a breathalyzer test without a warrant. Breathalyzers need to be regularly calibrated, so it could partly be laziness in that regard. But I’m pretty sure it’s mostly because they want to prove you are not safe to drive regardless of your blood alcohol content. The longer the stop, the more opportunity there is to find something against you.