What is the function of an ignition interlock device?

What is the function of an ignition interlock device?

• A. A GPS tracking device
• B. A device that uses deep-lung breath analysis to prevent starting if alcohol is detected
• C. A camera monitoring system
• D. A seat belt reminder

Answer: (B)

An ignition interlock is a breath-alcohol testing device installed in a vehicle. Before the engine will start, you must blow into it and provide a deep-lung breath sample. The device analyzes the breath for alcohol content, and if it detects alcohol above the programmed limit, the vehicle will not start. Some systems also require periodic retests while driving to ensure continued sobriety. This directly matches the option describing deep-lung breath analysis preventing starting if alcohol is detected, and it distinguishes from GPS tracking, camera systems, or seat belt reminders which serve different functions.

An ignition interlock is a breath-alcohol testing device installed in a vehicle. Before the engine will start, you must blow into it and provide a deep-lung breath sample. The device analyzes the breath for alcohol content, and if it detects alcohol above the programmed limit, the vehicle will not start. Some systems also require periodic retests while driving to ensure continued sobriety. This directly matches the option describing deep-lung breath analysis preventing starting if alcohol is detected, and it distinguishes from GPS tracking, camera systems, or seat belt reminders which serve different functions.