What is the purpose of administering SFSTs during DUI investigations?

The purpose of administering Standardized Field Sobriety Tests (SFSTs) during DUI investigations is to determine if there is probable cause to arrest someone for driving under the influence. These tests are systematic and scientifically validated exercises designed to assess a driver’s physical and cognitive abilities. By evaluating the results of these tests, law enforcement officers can identify signs of impairment that may suggest a driver is under the influence of alcohol or drugs.

SFSTs typically include tasks like the Horizontal Gaze Nystagmus test, the Walk-and-Turn test, and the One-Leg Stand test. Each of these tests is designed to measure specific functions such as balance, coordination, and the ability to follow instructions, which can be negatively impacted by alcohol consumption or drug use. The performance on these tests provides the officers with critical evidence that contributes to establishing probable cause for an arrest.

The other options are not relevant to the SFSTs. They pertain to different aspects of traffic enforcement, such as speeding violations or vehicle compliance checks, rather than impairment due to substance use. Thus, option B directly captures the essential purpose of SFSTs in a DUI context.