Field sobriety tests are commonly used in Maryland DUI investigations, but they are not always reliable—especially for drivers with medical conditions or physical injuries. Balance, coordination, and eye movement tests can be affected by health issues unrelated to alcohol or drug use. In Annapolis and throughout Maryland, many DUI cases rely heavily on these tests, even when results may be misleading. If you have a medical condition and were stopped and accused of impairment, talk to an experienced DUI attorney.
How Are Field Sobriety Tests Used in Maryland DUI Cases?
Police use standardized field sobriety tests (SFSTs) to assess whether a driver may be impaired. The most common tests include:
- Horizontal Gaze Nystagmus (HGN) – eye movement tracking
- Walk-and-Turn – divided attention and balance
- One-Leg Stand – balance and coordination
Officers are trained to look for specific “clues” during these tests. However, these clues are not exclusive to impairment and can be influenced by many non-alcohol-related factors.
Why Field Sobriety Tests Are Not One-Size-Fits-All
Field sobriety tests assume a baseline level of physical ability. In reality, many drivers do not meet that assumption. In Annapolis DUI stops, these tests are often administered roadside under less-than-ideal conditions, including:
- Uneven pavement
- Poor lighting
- Weather conditions
- Traffic distractions
When combined with individual health factors, these conditions can significantly affect performance.
How Can Medical Conditions Affect Test Results?
Many common medical conditions can interfere with field sobriety tests, including:
- Inner ear disorders affecting balance
- Neurological conditions
- Vision problems or eye disorders
- Chronic pain or joint issues
- Diabetes or blood sugar fluctuations
- Anxiety or panic responses
These conditions may cause a driver to appear unsteady, confused, or non-compliant—even when no impairment is present.
Injuries and Physical Limitations
Recent or ongoing injuries can also impact performance. These may include:
- Knee, ankle, or back injuries
- Post-surgical limitations
- Muscle strain or reduced mobility
- Use of braces or supports
Drivers are not always asked detailed medical questions before testing begins. In some cases, officers proceed with tests even after a driver expresses difficulty.
How Are Officer Observations Interpreted?
In many Maryland DUI cases, field sobriety tests are paired with visual observations by the police, such as:
- Swaying or loss of balance
- Difficulty following instructions
- Slurred speech
- Slow or hesitant responses
For drivers with medical conditions, these observations may reflect physical limitations rather than impairment. Body-camera footage often provides important context for how the tests were conducted and interpreted.
Challenging Field Sobriety Test Results
Field sobriety test results are not definitive proof of impairment. They can be challenged in several ways:
- Showing the driver had a documented medical condition
- Demonstrating improper test administration
- Highlighting poor testing conditions
- Using medical records or expert testimony
- Contradicting officer observations with video evidence
In Annapolis DUI cases, these challenges can significantly affect how the case is evaluated and
How We Help You Address Medical and Testing Issues
At Hartman Attorneys at Law, we approach these cases by focusing on what the field sobriety tests actually show—and what they do not. Our role is to help you present a clear, evidence-based explanation of how your medical condition or injury affected your performance.
We can help you:
- Identify medical factors that influenced test results
- Review how the tests were administered and documented
- Use records and evidence to challenge assumptions of impairment
- Analyze video footage for inconsistencies
- Build a defense that reflects your actual condition, not just test outcomes
Above all, we will work to ensure your physical limitations are properly understood and fairly considered.
Talk to an Annapolis DUI Attorney
If you failed field sobriety tests due to a medical condition or injury in Annapolis or anywhere in Maryland, you may have strong defenses available. These cases are not as straightforward as they may seem. Contact Hartman Attorneys at Law to explore your options and build a defense focused on protecting your record and your future.