You may see this show up in a police report, charging papers, or an officer's words at the roadside: "failed field sobriety tests" or "refused field sobriety testing." It means a set of physical and attention-based exercises police use during a DUI investigation to look for signs of alcohol or drug impairment. Common examples include following a moving object with the eyes, walking heel-to-toe, and standing on one leg.

These tests can matter fast because they often become part of the officer's basis for probable cause to arrest you for DUI. They are not a medical exam, and many things besides intoxication can affect performance - fatigue, injury, bad knees, anxiety, uneven pavement, poor lighting, or weather. In Washington, that can be especially relevant on wet shoulders, storm-damaged roads, or areas affected by king tides and coastal flooding where footing is unstable.

For Washington drivers, there is a key legal distinction: roadside field sobriety tests are generally voluntary, while the state's implied consent law, RCW 46.20.308, applies to a breath test after arrest. That difference can affect both a criminal case and any related injury claim after a crash. If an officer says you "failed" these tests, that can shape fault arguments, insurance decisions, and settlement value almost immediately. Time matters because video, witness memories, and road-condition evidence can disappear quickly.