What is Preliminary DWI Screening?
Preliminary DWI screening is a series of tests conducted by law enforcement officers to determine if a driver is impaired. These tests are usually conducted at the scene of a traffic stop and include tasks such as walking in a straight line or standing on one leg. The purpose of these tests is to gather evidence of impairment that can be used to justify further testing or arrest.
What is Chemical Testing for DWI?
Chemical testing for DWI involves the analysis of a person’s blood, breath, or urine to determine their blood alcohol concentration (BAC). This testing is usually done after a driver has been arrested on suspicion of DWI. Chemical testing provides more accurate and objective evidence of impairment compared to preliminary screening tests.
Key Differences
- Purpose: Preliminary screening tests are used to gather evidence of impairment, while chemical testing is used to determine a person’s actual BAC.
- Accuracy: Chemical testing is generally more accurate and reliable than preliminary screening tests.
- Timing: Preliminary screening tests are conducted at the scene of a traffic stop, while chemical testing is usually done after a driver has been arrested.
How Kevin DeVore Can Help
If you have been charged with a DWI in Minnesota, it is important to speak to an experienced criminal defense attorney like Kevin DeVore. Kevin can help you understand your rights and options when it comes to DWI charges. Contact Kevin DeVore at DeVore Criminal Defense in St. Paul, Minnesota, at 651-435-6500 for a consultation. Kevin will be your best line of defense from start to finish.
Posted 8th April 2024 by DeVore Law Office