Which of the following describes driver characteristics and behaviors relevant to crash investigations?

• A. License Status; Vehicle Registration; Insurance Policy; Registration Expiration
• B. Vehicle Type; Engine Size; Tire Tread; Fuel Level
• C. Nervousness; Cooperative or Uncooperative; Belligerent; Talkative; Attitude; Speech (Slurred, Slow, Disoriented); Any Incapacitating Features; Injuries
• D. Weather Condition; Road Surface; Visibility; Time of Day

Answer: (C)

Understanding driver characteristics and behaviors at the crash scene is essential because these observable cues help determine impairment, distraction, medical issues, or intoxication, and they shed light on how the driver interacted with the events leading to the crash. The items described—nervousness, whether the driver cooperates or not, attitude, talkativeness, quality and clarity of speech, any incapacitating features, and injuries—directly reflect the driver's state and behavior, which are key to reconstructing cause and contributing factors. In contrast, the other options focus on regulatory details (license and registration), vehicle specifications (type, engine size, tires), or environmental conditions (weather, road, visibility, time of day), none of which describe the driver’s behavior at the scene.