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Facts of the case. A police officer approached Muniz, who was in his car, suspecting him of driving under the influence of alcohol. The officer asked Muniz several questions and directed Muniz to perform sobriety tests, including “a ‘horizontal gaze nystagmus’ test, a ‘walk and turn’ test, and a ‘one leg stand’ test.”
Sobriety checkpoint in Stralsund, Germany. Field sobriety tests (FSTs), also referred to as standardized field sobriety tests (SFSTs), are a battery of tests used by police officers to determine if a person suspected of impaired driving is intoxicated with alcohol or other drugs. FSTs (and SFSTs) are primarily used in the United States, to meet ...
As the dissenting opinion by Justice Stevens explains, "a sobriety checkpoint is usually operated at night at an unannounced location. Surprise is crucial to its method. The test operation conducted by the Michigan State Police and the Saginaw County Sheriff's Department began shortly after midnight and lasted until about 1 a.m. During that ...
During a traffic stop, officers often perform field sobriety tests, said Saad, a former Wake County prosecutor. That includes asking a driver to walk and turn, balance on one leg and follow a pen ...
Field sobriety tests are a battery of tests used by police officers to determine if a person suspected of impaired driving is intoxicated with alcohol or other drugs. FSTs are primarily used in the United States, to meet " probable cause for arrest " requirements (or the equivalent), necessary to sustain a DWI or DUI conviction based on a ...
Small hand-held breathalyzers are not reliable enough to provide evidence in court but reliable enough to justify an arrest. These devices may be used by officers in the field as a form of "field sobriety test" commonly called "preliminary breath test" or "preliminary alcohol screening", or as evidential devices in point of arrest testing.
Drug impaired drivers still show impairment during the battery of standardized field sobriety tests, but there are additional tests to help detect drug impaired driving. The Drug Evaluation and Classification program is designed to detect a drug impaired driver and classify the categories of drugs present in their system.
General and cited sources. Drunk driving in the United States. Drunk driving is the act of operating a motor vehicle with the operator's ability to do so impaired as a result of alcohol consumption, or with a blood alcohol level in excess of the legal limit. [ 1 ] For drivers 21 years or older, driving with a blood alcohol concentration (BAC ...