In a car crash or other incident involving multiple vehicles the police may investigate whether the driver of any of the vehicles is under the influence of or intoxicated by alcohol or drugs, and are not limited to investigating and arresting only the driver who was at fault in the accident, for example.
In Kentucky, when a car crash or other incident involving multiple vehicles occurs, law enforcement officers have the authority to investigate all drivers involved for potential impairment due to alcohol or drugs, regardless of who is at fault for the accident. This means that any driver, not just the one who caused the accident, can be subject to field sobriety tests, breathalyzer tests, or other assessments if the officer has reasonable suspicion that the driver is under the influence. If a driver is found to be impaired, they can be arrested and charged with Driving Under the Influence (DUI), pursuant to Kentucky Revised Statutes (KRS) Chapter 189A. The state's implied consent law requires drivers to submit to such tests if requested by law enforcement, and refusal can lead to additional penalties.