Which tool is commonly used for breath analysis in DUI investigations?

The commonly used tool for breath analysis in DUI investigations is a Breathalyzer. This device measures the concentration of alcohol in a person’s breath, providing an estimate of their blood alcohol content (BAC). The Breathalyzer works on the principle that alcohol present in the breath correlates with the alcohol in the bloodstream.

Using a Breathalyzer allows law enforcement officers to quickly assess whether a driver is over the legal limit for blood alcohol concentration, which is crucial during roadside checks. Its portability and ease of use make it an essential tool for immediate assessment in DUI situations.

In contrast, blood tests, while highly accurate, require more time and resources, as they must be conducted in a medical setting. Bodily fluid analyzers are broader in scope and can test for various substances, but they are not specifically designed for alcohol breath analysis. Field sobriety tests assess a driver’s physical abilities and coordination to help determine impairment, but these are subjective and not as definitive as breath analysis. Thus, the Breathalyzer stands out as the most appropriate tool for this specific purpose.