How to Discredit Retrograde Extrapolation in a DWI Breath Test Case »

May 15, 2010

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When a driver agrees to submit a DWI/DUI breath test, then the state’s star witness at the trial would be the technical supervisor and the state’s expert on the breath test machine. The state’s expert’s testimony will be the calculation of the driver’s alcohol concentration at the time of driving and how many drinks took him/her to that point. This specific scientific theory is called retrograde extrapolation.

As the prosecutor will ask the technical supervisor to determine these numbers for the jury. The technical supervisor at the witness stand will punch numbers into a calculator. All of sudden testimony looks dramatic when the state’s expert will be asked on cross examination whether he and the prosecutor discussed his testimony before he took a stand. After being asked, he will be forced to admit that he calculated the numbers ahead of time. Click here to read more »

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Cop Accused of Elaborate Scheme for Chicago DUI Arrests »

October 7, 2009

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A news channel in Chicago recently showed footage of a surveillance video of a police officer accused of making fake DUI arrests.

There were a series of complaints against Officer Richard Fiorito, which lead his superiors to order him to use a video camera in his squad car. The footage from this camera has now caused the officer to be caused of making fake arrests. The video is now being used against Fiorito in a law suit involving 21 people who are accusing the officer of having a DUI scheme.

Click here to read more »

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