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Breathalyzer evidence is critical in any drunk driving case — and mandatory in a .08% charge.  Yet, as I've written repeatedly in the past, these machines are neither accurate nor reliable.  See, for example, How Breathalyzers Work — and Why They Don't, Inaccurate Breathalyzers Cast Doubt on 1,147 DUI Cases in Philadelphia and Report: Breathalyzers Outdated, Unstable, Unreliable.   

And in today's news:

JudgeThrows out Breath Machine Evidence

County judge in Pennsylvania rejects breath test machine as inaccurate beyond a certain range

Dauphin Co., PA.  Jan. 8 –A judge in Dauphin County, Pennsylvania last week delivered a bombshell decision finding evidence provided by breath machines to be inaccurate outside a narrow range. After hearing extensive testimony from expert witnesses, the Court of Common Pleas judge found it was not appropriate for charges of "high rate" driving under the influence of alcohol (DUI) be established by providing a printout from a machine displaying a high number. 

"The unvarnished facts of this case ultimately establish that the array of breath testing devices presently utilized in this commonwealth, and in particular the Intoxilyzer 5000EN device manufactured by CMI, Inc., as those devices are presently field calibrated and utilized in this commonwealth, are not capable of providing a legally acceptable Blood Alcohol Content (BAC) reading, which is derived from a defendant's breath, outside of the limited linear dynamic range of 0.05 percent to 0.15 percent," Judge Lawrence F. Clark Jr. ruled. 



In Pennsylvania, a separate "highest rate of alcohol" charge can be levied on a driver accused of having a BAC in excess of 0.16 percent. Enhanced penalties for this charge include a fine of up to 00 for a first offense and a minimum three-day stay in jail. A third offense carries a minimum one-year jail sentence.



Testimony offered at the hearing showed the manufacturer of the Intoxilyzer failed to follow state rules requiring the solutions used to calibrate the breath machines be certified by an independent lab. CMI creates its own samples in-house, according to CMI engineer Brian T. Faulkner.



"As a result of the evidence produced at the hearing, it is now extremely questionable as to whether or not any DUI prosecution which utilizes a reading from an Intoxilyzer 5000EN breath testing device could presently withstand scrutiny based upon the startling testimony of the commonwealth's own witness, Mr. Faulkner, at the hearing," Judge Clark wrote.



Since the machine did not follow state regulations, there was no way the court could determine whether the initial calibration of the machine was completed in a scientific and accurate manner. Moreover, the machine is only checked against samples of 0.05, 0.10 and 0.15 percent. 



"If you're calibrating from 0.05 to 0.15 and did these three points, you have the correlation coefficient, you've proven to me that your instrument works — definitely works between 0.05 percent and 0.15 percent. There's no data to say that it works at 0.16 percent. There's no data to say it works at 0.04 percent," Lee N. Polite, an expert in organic chemistry, testified.

Despite the unreliability of thse machines, they continue to constitute the main evidence against a citizen charged with DUI — and the only evidence when charged with having over .08% blood alcohol.
 

DUI BLOG

In most drunk driving cases, by far the most important evidence comes from a breath test.  Our DUI laws even provide that they are sufficient by themselves to warrant a conviction.  The accuracy of these devices is, therefore, critical.  And I’ve posted dozens of time on the inaccuracy and unreliability of breathalyzers.  See, for example, How Breathalyzers Work — and Why They Don’t, Attorney General Finds Widespread Breathalyzer Inaccuracies: Police Shut Down All Machines and More Massive Breathalyzer Failures.

Besides the inherent inaccuracies of breath-testing devices, they are also entirely dependent upon proper maintenance and calibration by the police making the arrest. Failure to properly calibrate one of these devices on a regular basis is going to result in false readings — and wrongful convictions.

Unfortunately, cops and police agencies are notoriously lazy or incompetent when it comes to these irritating "technical" tasks….

SFPD Breathalyzer Error Puts Hundreds of DUI Convictions in Doubt

San Francisco, CA.  March 5 – Hundreds, or even thousands, of drunk driving convictions could be overturned because the San Francisco Police Department has not tested its breathalyzers, officials said Monday.

For at least six years, the police officers in charge of testing the 20 breathalyzers used by the Police Department did not carry out any tests on the equipment.

Officers instead filled the test forms with numbers that matched the control sample, said Public Defender Jeff Adachi, throwing countless DUI convictions into doubt.

“We do expect that the cases will be in the hundreds. It’s possible that it could go into the thousands. The District Attorney’s Office is still investigating the scope of this,” Adachi said during a joint news conference with District Attorney George Gascon…

Amazing….no calibration tests in six years!  The cops just made up numbers to make the machines look accurate.

Even more amazing that a reading from one of these machines is legally considered proof beyond a reasonable doubt in a DUI case — and even triggers a legal presumption of guilt, forcing an accused citizen to prove his innocence.  See Whatever Happened to the Presumption of Innocence? and How to Overcome Scientific Facts: Pass a Law. 

(Thanks to Andre Campos and Murphy Mack.)
 

DUI BLOG

As regular readers of this blog are painfully aware, over the past 7 years I’ve posted ad nauseum about the inaccuracy and unreliability of breath machines used in drunk driving cases.  See, for example, How Breathalyzers Work – and Why They Don’t, Breath-Alcohol Testing: "State of the Art"?, Report: Breathalyzers Outdated, Unreliable, Unstable and "Close Enough for Government Work".  In fact, a few days ago I wrote about the Washington D.C. Attorney General throwing out dozens of DUI cases and investigating hundreds of others because of breathalyzer accuracy issues.  See Attorney General Finds Widespread Breathalyzer Inaccuracies; Police Shut Down All Machines.

For those doubters out there who thought this was just an isolated instance, consider today’s news:
  

Philadelphia To Review All Breathalyzer-DUI Cases From 15 Months 

Philadelphia, PA.  March 25 — A day after Philadelphia police announced that miscalibrated breathalyzers had compromised 1,147 drunken-driving cases, District Attorney Seth Williams  declared he would conduct a wholesale review of all DUI cases during the 15 months in question.

Philadelphia police file 8,000 to 10,000 drunken-driving cases each year, so the review announced Thursday by Williams’ office will involve a staggering amount of work that will take months to complete. 

Deputy District Attorney Edward McCann, chief of the Criminal Division, decided to launch the review, said Williams’ spokeswoman, Tasha Jamerson. Assistant District Attorney Lynn Nichols will lead a team of prosecutors and staff that will examine the cases from September 2009 to November 2010.

McCann is also implementing training on DUI cases for prosecutors that will emphasize recognizing potential problems with the Breathalyzer devices.

Finally, Jamerson said, the District Attorney’s Office will start doing its own calibration checks on Breathalyzers rather than depend solely on police certification.

The real bill will be some time in coming.

Besides the cost of reviewing thousands of DUI prosecutions and likely retrying some, the police and city could face civil lawsuits by people wrongly convicted – some of whom may have lost their driver’s license, their job, or their freedom.

Though police officials have a list of about 400 people affected by the miscalibrated machines, Jamerson said Williams had decided a full review was needed.

Though defense lawyers specializing in DUI cases said only two of the Police Department’s eight Breathalyzers had proved inaccurate, police said Wednesday that the total was four. Some court-system sources said that number was likely to increase.

Thousands of citizens are convicted every day of driving with a blood-alcohol level of .08% — based entirely upon the readings of these machines.  In a "trial by machine", the results of these devices legally establish a rebuttable presumption of guilt and are considered proof beyond a reasonable doubt.  See Whatever Happened to the Presumption of Innocence? and Trial by Machine. 

(Thanks to Ari Weiner.)
 

DUI BLOG