Breath-tests allowed back in evidence at OUI trials
On July 29, 2019, Judge Robert A. Brennan lifted the “presumption of unreliability” which had kept breathalyzer tests in drunk driving cases out of evidence since August 2017. This decision is the latest in a series of decisions Judge Brennan has made in Commonwealth v. Ananias, a case that raised the question of whether breathalyzer tests are reliable enough to serve as evidence in OUI prosecutions. In February 2017, Judge Brennan recognized the “presumptive unreliability” of thousands of breath tests administered by police officers using the Alcotest 9510 device. Specifically, Brennan found that the methodology the Massachusetts State Police Office of Alcohol Testing (OAT) used for annually certifying the devices from June 2011 to Sept. 14, 2014, did not produce “scientifically reliable” blood alcohol-content results. In 2018, prosecutors agreed not to introduce the results of breathalyzer tests administered as far back as September 2011. On January 9, 2019, Judge Brennan issued a sanctions order that established seven requirements for the state to meet before the Draeger Alcotest 9510 could be considered reliably calibrated.