Breath testHungary
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231. Breath test
A breath test is a preliminary roadside test used to detect alcohol in a person’s breath and determine whether further testing is required. The person blows into a portable testing device, which compares the alcohol level with predefined thresholds. A breath test is generally used for screening rather than providing the final evidential measurement. If the result reaches the applicable limit, a more precise breath analysis or another legally recognised test may follow.
What is a breath test?
A breath test is a preliminary test that detects alcohol in exhaled breath and indicates whether the alcohol level is below or above specified thresholds.
How does a breath test work?
The person blows into a portable breath-testing device, which analyses a sample of exhaled air for alcohol.
Is a breath test the same as a breath analysis?
No. A breath test is generally a screening test, while a breath analysis provides a more precise measurement of the alcohol concentration in exhaled breath.
What happens after a positive breath test?
Depending on local law, a positive result may be followed by a breath analysis, blood test or other evidential procedure.
Can police perform random breath tests?
In many countries, police may conduct roadside alcohol checks even when a driver does not show obvious signs of impairment. The exact powers vary by country.
Can you refuse a breath test?
Rules vary between countries, but refusing a legally required breath test can itself lead to penalties or an immediate restriction on driving.

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Hungary