During most any traffic stop that appears to the officer in charge to involve drinking and driving, the motorist will likely be asked to perform a one or more of the standardized field sobriety tests (FSTs) as prescribed by the National Highway Traffic Safety Administration (NHTSA). For those unfamiliar with these tests, they are comprised of a number of simple physical tasks — such as walking a straight line heel-to-toe or standing on one leg for 30 seconds — which police use to gauge a person’s level of impairment from drugs or alcohol.
Historically, law enforcement agencies have used these tests coupled with other observed symptoms of drunkenness — such as weaving in one’s lane — and the officer’s professional opinion to determine guilt and justify the arrest of a motorist for driving while intoxicated. Here in New Jersey, as well as the rest of the country, a patrolman must correctly administer the FSTs as approved by the NHTSA in a standardized manner in order to obtain a validated indicator of impairment and establish probable cause for a DWI-DUI arrest.
As common as the FSTs are in the daily duties of police officers all across the Garden State, they nonetheless represent one of the more controversial aspects of a drunk driving stop. In an effort to lend more credibility to these tests, the NHTSA developed a model training system for police officers and published numerous training manuals regarding the use and administration of FSTs. Even though the results of these test may be held up by the prosecution as proof of inebriation on the part of a driver, even experts in the field of DWI don’t agree on the effectiveness of FSTs.
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