Attacking the police officer's observations of bad driving
The prosecutor will try to show that alcohol impairment caused bad driving. For example, a prosecutor will argue that speeding or failing to stop fully at a stop sign is consistent with being impaired. The officer typically omits everything that the driver did correctly while he/she observed you. Moreover, speeding or merely failing to stop fully at a stop sign is clearly not related to alcohol use because thousands of persons monthly are cited for such infractions that do not involve alcohol.
Emphasizing driving consistent with sobriety
It is important to highlight all the facts of your case that are consistent with sobriety. For example, when the officer turned his overhead lights on to pull you over, you immediately reacted to the lights (consistent with sobriety). You chose an area to pull over that was safe (consistent with sobriety). You pulled over safely (consistent with sobriety). These are all hypothetical's that, if true, can help your case. Also, if factually correct, we want to demonstrate the absence of "classic alcohol impaired actions," such as crossing over lanes, accidents and fleeing a police officer, did not occur in this case. If, for example, an accident did occur, we would endeavor to show that the accident was not caused by alcohol.
Contesting the police officer's field sobriety tests
The prosecutor will highlight anything that you, according to the police report or witness statements, failed to do correctly during the field sobriety tests. It is important to contest these field sobriety tests several different ways. The prosecution and the police officer, almost inevitably emphasize errors that a driver makes on field sobriety tests. It is important to show that any "mistakes" either did not occur or if they did, were caused by impairment but by other factors, such as fatigue or nervousness.
Examples of flaws in field sobriety tests
The following illustrates how to refute an officer's conclusions about poor performance on field sobriety tests. The officer may have directed you to perform, for example, a "heel-to-toe" test in which you must take a certain number of steps in one direction and then turn around and take another number of steps to return. The officer will write in the police report, for example, that you did not place your heel immediately against your toe on step number three and left a distance of one half inch between your two feet. Physical problems of your being stiff from driving late at night can cause such a result. Moreover, uneven surfaces, fatigue, and/or glare from oncoming traffic (or from the officer's own vehicle) can cause such a result. Equally importantly, certain gaps between a person's heel and toe are, in fact, permissible.
Emphasizing tasks performed correctly
In addition, we will show everything that you did correctly on each of the field sobriety tests. Using again the example of the heel-to-toe test, we can break down the heel-to-toe test into separate parts. For example, if the officer had you perform eight steps out and seven back, with your having a gap between your heel and toe at step four going out, we could show that you did step one going out correctly, step two, step three, step five, step six, step seven, step eight, etc and keep a tally of everything done correctly vs. those done incorrectly. If, for example, during the entire field sobriety tests, you did 79 things correctly and three things incorrectly, that surely would be a passing grade in school, work, etc.
Refuting the so called "objective symptoms of intoxication"
The prosecutor will point to information in the police report from the officer about, for example, your red or watery eyes or "odor of alcohol" on your breath. We must, from the very onset of the case, emphasize that the law does not prohibit drinking and driving. The law prohibits driving while impaired. This difference is because those so called symptoms are present when persons drink, whether or not those persons are impaired. In addition, we can show that other factors, independent of alcohol consumption, can produce red eyes (contacts, fatigue). In addition, the "odor of alcohol" is a misstatement because the additives in alcohol, rather than alcohol itself, create the odor.
Rising blood alcohol defense
Alternatively, we could (if factually correct) use the "odor of alcohol" to establish that you drank immediately before getting behind the wheel and thus has a rising blood alcohol defense (while driving, the blood alcohol was under the limit, but by the time you were taken to the station for the test, your body has fully absorbed all the alcohol and thus you at the time of the test were over the .08 limit).
Casting doubt about the validity of the chemical tests
The prosecutor may receive a chemical test report from a "criminologist," a person employed by a crime lab, about the chemical tests and your sobriety at the time you were driving. The chemical test may be blood or breath. However, we can show that many criminologists have very limited experience, or that they are biased because all of their experience has been gained through their employment with law enforcement. Moreover, the criminologist's resume could show that he/she has never written any articles about his/her so called area of expertise (in contrast to a defense expert).
Your lawyer can request to have the blood sample retested to show that the criminologist failed to test the sample to determine if the appropriate level of preservative and anti-coagulant were present (the absence of either or an insufficient or overabundant amount of either may cause a false high reading). Moreover, if the blood is retested and a lower result is measured, the degree of discrepancy between the initial and second test may create reasonable doubt and thus the basis for a dismissal or reduction of charges.
As to a breath test, the breath machines must be properly maintained and calibrated on a periodic basis. Through the discovery process, your lawyer will obtain the calibration and maintenance records and use them if they show any problems. Moreover, by statute, the officer must observe you for 15 minutes before having you perform the breath test to prevent the contamination of the breath samples by any foreign source (belching, vomiting, etc). It is important to exploit any failure by the officer to maintain the appropriate 15 minute observation period. Furthermore, any specific medical or dental conditions leading to the trapping of mouth alcohol or production of belching or regurgitation can be shown to cause an artificially high result. In addition, if your breath test result differs by more than .02%, there are problems admitting the test results against you.
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