A police officer in Germany uses a pipette to transfer urine from a sample cup to a rapid drug test last month. A small percentage of alcohol tests used in California have shown accuracy problems.

The federal government has imposed a $95 million penalty on California for shortcomings in handling DUIs, marking a significant escalation in oversight on state traffic enforcement as of November 27, ...

A very prominent former California prosecutor and Kern County’s longest-serving district attorney is facing mulitple charges ...

A 49-year-old Rohnert Park man was arrested Wednesday on suspicion of driving under the influence after a citizen reported a suspected intoxicated driver, according to the Petaluma ...

Generally, urinalysis tests are rarely used to prosecute DUIs. Following an audit by the state, officials told The Times this week, the state Department of Justice determined that only a small number ...