A charge of driving whilst intoxicated or DWI is taken very seriously these days and can carry if convicted. For this reason alone you need to hire an experienced DWI lawyer to represent
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Your lawyer will look at the evidence against you and try to determine if this evidence was properly obtained at the time of your arrest. Cases of DWI rely on technical medical and scientific tests being carried out, which have to be carried out with the correct equipment, by qualified personnel and under strict procedures. If it can be proved that they were not then the evidence can be deemed as inadmissible and not used in court. Your lawyer may also look at the testimony of the arresting officer, and ask: did they have due cause to stop you? Did they follow the correct procedures when it came to the field sobriety tests and is there an alternative explanation for their observations?