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In my last post (Hundreds of DUI Convictions in Doubt: Inaccurate Breathalyzers), I featured a news story about widespread breathalyzer failures in San Francisco.  I also mentioned that this was not an isolated situation, pointing out massive failures of the devices in other cities across the country.

In a follow-up yesterday, the San Francisco Chronicle has confirmed this:

SF Not Alone in DUI Test Flaw, Dropped Convictions

San Francisco, CA.  Mar. 12 – In facing the possible loss of hundreds of drunken-driving convictions because of a testing controversy, San Francisco is not alone.

District Attorney George Gascón said last week that his office was reviewing cases going back to 2006 because of possible police mismanagement of the breath-test devices used to measure drivers’ blood-alcohol levels. Public Defender Jeff Adachi said as many as 1,000 convictions could eventually be overturned.

Other jurisdictions, including Santa Clara County and Ventura County, have had to drop some drunken-driving convictions because of problems with faulty or mishandled breath-test devices – although fears of mass dismissals have proved unfounded.

San Francisco’s troubles began when attorneys with the public defender’s office discovered suspicious bookkeeping in the Police Department’s accuracy testing of the devices. The entries suggested that officers weren’t conducting the checks at all.

A similar situation in Philadelphia last year resulted in the district attorney offering new trials to nearly 1,500 people who had been convicted of driving under the influence over the previous 15 months.

Police there revealed in March 2011 that four breath-test devices – different models from those used in San Francisco – had not been properly calibrated, said Tasha Jamerson, a spokeswoman for the district attorney’s office…

Officers in the field there ask suspected drunken drivers to exhale into portable testing devices to estimate whether a driver’s blood alcohol level is above the legal limit of 0.08 percent. In April 2010, Santa Clara County authorities learned that condensation was building up in the device, the Alco-Sensor V, that San Jose and Palo Alto police had been using for nearly all of 2010, resulting in erratic readings.

The device was a newer model of the Alco-Sensor IV that San Francisco police and many other Bay Area law enforcement agencies use…

Ventura County dismissed at least 64 cases in 2011 because of the same condensation glitch, said Senior Deputy District Attorney Stacy Ratner.

Intoximeters, the Missouri company that makes the Alco-Sensor devices, did not respond to requests for comments…

Although the news story only mentioned California counties, as well as Philadelphia, the widespread unreliability of these machines — upon which criminal convictions are based — goes far beyond that state.  See, for example, Attorney General Finds Widespread Breathalyzer Inaccuracies: Police Shut Down All Machines, 400 Wrongly Convicted in Washington: Faulty Breathalyzers and More Massive Breathalyzer Failures.  

For a confidential government document verifying the unreliability, see Report: Breathalyzers Outdated, Unstable, Unreliable.

(Thanks to Andre Campos.)

DUI BLOG

If you are accused of DUI or DWI, a reading results in a legal presumption of guilt; if charged with driving with a blood-alcohol content of .08% or higher, the machine is the only evidence of blood-alcohol.  In essence, either way you will be facing a "trial by machine".

So how good are these machines?  Good enough to constitute "proof beyond a reasonable doubt"?  Or are they just "close enough for government work"?

As regular readers know, one of my pet peeves is the unreliability and inaccuracy of breathalyzers (or, more accurately, any of the various breath testing models sold by a handful of manufacturers).  See, for example, Breath Alcohol Testing: "State of the Art?, Why Breathalyzers Don’t Measure Alcohol and Report: Breathalyzers Outdated, Unstable, Unreliable. 
 

D.C. Attorney General Drops Drunk Driving Cases

Wash. DC.  Feb. 8 — The District’s attorney general has dropped dozens of drunken driving cases since Jan. 31 and hundreds of others could be dropped as the police department shuts down its troubled alcohol breath-test program. Problems dating back more than three years with the city’s breath analyzers were first revealed in February 2010, when it was discovered the machines’ results were inaccurate. Since then, the D.C. medical examiner’s office has refused to sign off on the accuracy tests of new analysis machines, officials said.

"The alcohol breath-analysis program? It doesn’t exist anymore," said Ilmar Paegle, who discovered problems with the Intoxilyzer 5000s soon after he took over the city’s breath-analysis program on Feb. 1, 2010. Paegle’s contract ended last week. As he left, he said, the police department pulled off the street the Intoximeter, which replaced the Intoxilyzer last spring. "It’s a royal mess," Paegle said.

A spokeswoman for D.C. Attorney General Irvin Nathan said he couldn’t be pulled from a meeting to comment Tuesday. Nathan dropped eight more drunken driving cases Tuesday.

City policy requires the medical examiner’s office to certify the program, and it has not done so, citing concerns raised by the problems with the previous models, Paegle said. Although officers had been using the Intoximeters, the results were not being included as evidence, according to Paegle and internal police e-mails obtained by The Washington Examiner.

The medical examiner’s office declined to comment, citing pending litigation. Dozens of defendants have sued the city after being convicted on potentially faulty breath-test results.

Assistant police Chief Patrick Burke said officers are now taking urine samples to test blood alcohol levels for potential future prosecutions.

Meanwhile, the two police officers who account for a third of the city’s 1,400 annual drunken driving arrests have had their trial testimony called into question. They are the subjects of an internal affairs investigation that began after they spoke out about problems with the breath analyzers.

Officers Jose Rodriguez and Andrew Zabavsky learned that the medical examiner hadn’t signed off on the program and began mentioning that in their trial testimony last spring, according to an e-mail from Zabavsky to police Chief Cathy Lanier. Later in the spring, the attorney general’s office began an investigation into the officers, saying a woman they arrested for driving under the influence in June 2009 had complained the two watched her take a urine test.

In December, the case was turned over to internal affairs.

"On a day-by-day basis, cases are being dismissed because the officers involved are being investigated," said defense lawyer Bryan Brown.

The result, police union chief Kris Baumann said, is "our ability to enforce DUI laws in the District has been crippled".

The breathalyzers involved are the most commonly used across the country.  Do you really think only those in Washington D.C. are giving false results? 

DUI BLOG