What Are The Three Elements Prosecutors Use for Establishing a DUI Case?
In Pennsylvania, prosecutors must satisfy several legal requirements to establish a strong DUI case and meet their burden of proving guilt beyond a reasonable doubt. At SKA Law Group, Attorneys Michael Kotik and Amato Sanita routinely analyze DUI charges using three primary components that commonly determine whether the Commonwealth’s case is sound—or whether significant defense challenges exist.
The Legality of the Traffic Stop (Reasonable Suspicion or Probable Cause)
The first and most critical step is determining whether law enforcement had a lawful basis to stop the vehicle or to initiate contact with the individual. If police lacked reasonable suspicion for a traffic violation—or probable cause for a DUI-related stop—any evidence obtained after the stop may be subject to suppression through a Motion to Suppress.
If the stop is unlawful, the entire case may collapse.
Proof That the Defendant Was the Driver or in Actual Physical Control
A prosecutor must establish that the accused was driving—or was in “actual physical control”—of the vehicle. In many Pennsylvania DUI cases involving accidents, the accused is found outside the vehicle, or multiple individuals are present at the scene. If the Commonwealth cannot prove who operated the vehicle, this essential element fails. Judges often dismiss DUI charges when this requirement is not met.
Probable Cause to Believe the Defendant Was Impaired
The final step is determining whether officers had sufficient probable cause to believe the individual was under the influence. This analysis includes:
• Odor of alcohol or drugs
• Bloodshot or glassy eyes
• Slurred speech
• Field sobriety test performance
• Admissions or statements made to police
• Portable breath test results
• Blood test results
• Observations of impaired driving behavior
Probable cause is not one single factor—it is a combination of observations that must reasonably suggest impairment.
How These Elements Affect Your DUI Case
When these three components align, prosecutors generally claim they have a strong foundation for a DUI prosecution. However, when one or more elements is weak—or legally defective—a skilled defense attorney can challenge the case, suppress evidence, or seek dismissal.
If you want to understand how your case fits within these elements, contact SKA Law Group, Attorney Michael Kotik, or Attorney Amato Sanita at 267-265-4553. Michael Kotik reviews your DUI charges, analyze the legal issues, and determine the strongest possible defense strategy.