New Jersey prosecutors can use evidence of blood alcohol content (BAC) to prove that a person committed the offense of driving while intoxicated (DWI). Under state law, driving a vehicle on a public road implies consent to breath testing to determine BAC. Refusal to submit to breath testing is a separate motor vehicle offense. Law enforcement began using a device known as the Alcotest in 2005, and it is now the standard device throughout the state for BAC testing. Police must follow specific procedures regarding maintenance and calibration of these devices, as set forth in a 2008 ruling by the New Jersey Supreme Court. A decision by the court in late 2018 called over 20,000 New Jersey DWI cases into question based on falsified maintenance records. In June 2019, the Appellate Division cited that decision when it voided the conviction in one of the affected cases. If you have been stopped in New Jersey and asked to submit to breath testing, it is important that you contact a New Jersey DWI attorney as soon as possible to protect your rights under the law.
Under New Jersey law, BAC of 0.08 percent or higher creates a presumption that a person was under the influence of alcohol. This is known as per se DWI. Prosecutors can also establish that a person was impaired by alcohol through the “observational method.” This typically involves police officers’ testimony about their observations of a defendant’s appearance, behavior, and performance on field sobriety tests.
The New Jersey Supreme Court’s 2008 ruling established procedures for calibrating the Alcotest device, which requires careful maintenance to ensure accurate results. Police must calibrate the devices on a regular basis, and must follow standards set by the National Institute of Standards and Technology (NIST) when doing so. They must keep records of these calibrations, and must introduce those records as evidence along with BAC test results in DWI cases.