Sobriety testing refers to a series of assessments used by law enforcement to determine if a person is under the influence of alcohol or drugs while operating a vehicle. These tests can include field sobriety tests, breathalyzer tests, and blood tests. The goal is to ensure road safety and identify impaired drivers. Field sobriety tests often involve tasks like walking in a straight line or balancing on one leg. Breathalyzer tests measure the blood alcohol concentration (BAC) in a person's breath, while blood tests provide a more accurate measurement of alcohol or drug levels in the bloodstream.