What Are Field Sobriety Tests, and How Are They Used in Cambridge?
If you were pulled over on Memorial Drive, Mass Ave, Route 2, or Fresh Pond Parkway—or stopped by local police in Cambridge, Arlington, or Belmont—the arresting officer likely asked you to step out of your car to perform Field Sobriety Tests (FSTs).
Field Sobriety Tests are physical agility, balance, and divided-attention drills designed by the National Highway Traffic Safety Administration (NHTSA). Officers use these roadside exercises to claim they observed physical or cognitive proof of alcohol or drug impairment.
In reality, Field Sobriety Tests are highly subjective, notoriously unreliable, and designed for you to fail. Factors like nervousness, physical injuries, bad weather, traffic glare along major MBTA bus corridors, and uneven pavement on historic Cambridge streets frequently cause completely sober drivers to "fail".
Where Is Your Cambridge FST Evidence Evaluated?
All evidentiary challenges, officer cross-examinations, and motion arguments regarding field sobriety tests in Middlesex County are processed through:
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Courthouse Location: Cambridge District Court, 4040 Mystic Valley Parkway, Medford, MA 02155. (Note: Cambridge District Court sits physically at the Medford Judicial Facility).
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Prosecuting Authority: Middlesex County District Attorney's Office (Motor Vehicle Division).
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Jurisdiction: Conducts pre-trial hearings, Motions to Suppress Exit Orders, motions in limine, and jury trials.
The 3 NHTSA Standardized Field Sobriety Tests Used in Massachusetts
NHTSA recognizes three official standardized tests. Police officers watch for specific "clues" of impairment during each:
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Test Name & Category |
How the Test Is Administered |
Common "Clues" Officers Count Against You |
|
Horizontal Gaze Nystagmus (HGN) |
The officer holds a pen or light 12–15 inches from your face and moves it side-to-side, instructing you to follow it with your eyes without moving your head. |
• Involuntary eye jerking starting before a 45-degree angle. • Distinct eye jerking at maximum deviation. • Lack of smooth eye pursuit. |
|
Walk-and-Turn (WAT) |
You are instructed to take 9 heel-to-toe steps along a real or imaginary line, turn using a series of small steps, and take 9 heel-to-toe steps back while counting aloud. |
• Losing balance during instructions. • Stepping off the line or stopping while walking. • Taking the wrong number of steps or failing to touch heel-to-toe. |
|
One-Leg Stand (OLS) |
You must raise one foot roughly 6 inches off the ground, look down at your foot, and count aloud ("one thousand one...") until told to stop (30 seconds). |
• Swaying while trying to balance. • Hopping or putting your foot down. • Raising your arms more than 6 inches for balance. |
Non-Standardized Tests: Officers sometimes ask drivers to recite the alphabet from a non-standard letter (e.g., "D to W") or count backward. Under Massachusetts law, these non-standardized tests carry lower scientific weight in court.
Can You Legally Refuse Field Sobriety Tests in Massachusetts?
YES. You have the absolute legal right to refuse roadside Field Sobriety Tests in Massachusetts.
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No License Loss for Refusing FSTs: Massachusetts Implied Consent laws (M.G.L. c. 90, § 24) apply only to chemical breathalyzer or blood tests at the police station. Refusing roadside physical agility tests does not trigger an automatic driver's license suspension.
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100% Inadmissible in Court: Under Article 12 of the Massachusetts Declaration of Rights (Commonwealth v. McGrail), your refusal to perform roadside field sobriety tests cannot be used against you in court. Prosecutors are constitutionally barred from telling the jury that you declined the tests.
How We Fight Field Sobriety Test Evidence in Cambridge District Court
If you attempted roadside agility tests prior to your arrest, our defense team works to dismantle the prosecution's case:
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Filing Motions to Suppress Exit Orders: Arguing under Commonwealth v. Blais that Cambridge police lacked articulable reasonable suspicion to order you out of the vehicle.
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Exposing Strict NHTSA Protocol Failures: Cross-examining arresting officers on federal training manuals to prove they gave flawed instructions, failed to demonstrate the test, or miscounted clues.
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Challenging Scientific HGN Foundation: Under Commonwealth v. Sands, HGN eye test evidence cannot be presented to a jury without meeting strict scientific expert foundations.
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Subpoenaing Cruiser & Body-Cam Video: Comparing written police reports against actual video feeds to prove you maintained balance and spoke clearly.
Contact Our Massachusetts OUI Defense Team Today
The Law Offices of Kensley Barrett
📍 Massachusetts Office: 572 Washington Street, Suite 21, Wellesley, MA 02482
📞 Call Now: (857) 229-2442
🌐 Website: www.krbarrettlaw.com
