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Answer :
Ignition interlock devices are designed to prevent a vehicle from starting if the driver has a blood alcohol concentration (BAC) above a pre-set limit. Here's how they work:
Installation: The device is professionally installed in a vehicle. It is connected to the vehicle's ignition system and is placed prominently inside the car so the driver can easily use it before starting the vehicle.
Breath Sample Requirement: Before starting the car, the driver must blow into a mouthpiece on the device, similar to a breathalyzer test.
BAC Analysis: The device analyzes the alcohol content in the breath sample. If the BAC is below the set limit, the vehicle can be started. If it is above the limit, the engine will not start.
Periodic Tests: Some ignition interlock devices require retests during a drive to ensure the driver hasn’t consumed alcohol after starting the vehicle. If a retest is failed, the device may log the event, sound an alert, and potentially activate the vehicle’s lights and horn until the vehicle is stopped and turned off.
Data Logging: The device logs data such as BAC levels, test results, and attempts to start the vehicle. This data can be reviewed by authorities or monitoring companies.
Ignition interlock devices help promote road safety by preventing intoxicated individuals from operating a vehicle, thereby reducing the risk of alcohol-related accidents. They are often used as a legal requirement following a DUI (Driving Under the Influence) conviction.
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