What is the standard procedure for investigating alcohol levels during roadside traffic checks?

Question

DentroTest · Accepted Answer

Alcohol investigation is generally carried out by verifying expired air using officially authorized breathalyzers. This method is the standard due to its speed, non-invasive nature, and immediate reliability. Blood or urine tests are reserved for specific cases, such as when the driver requests a contrast test (the costs of which they must pay if the result is positive) or when physical or medical impediments make blowing into the device impossible. Tests like 'walking in a straight line' are assessments of external symptoms but do not constitute the primary legal measurement test in Spain.

What is the standard procedure for investigating alcohol levels during roadside traffic checks?

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