A sobriety test is a method used by law enforcement to determine if a driver is under the influence of alcohol or drugs. These tests can include physical tasks, such as walking in a straight line or standing on one leg, as well as breathalyzer tests that measure blood alcohol content. The purpose of sobriety tests is to ensure road safety and to identify impaired drivers. If a driver fails these tests, they may face legal consequences, including fines or arrest. Sobriety tests are an important tool in promoting safe driving and reducing accidents related to substance use.