Becoming mandatory in Turkey: What is an alcohol interlock? How does it work?

An alcohol interlock is a safety system that measures the blood alcohol concentration of drivers before they operate a vehicle and prevents the vehicle from starting if alcohol is detected above a set limit. This technology was developed specifically to prevent drunk driving and reduce traffic accidents. The system is connected to the ignition and does not allow the vehicle to start if the driver's alcohol level exceeds the specified limit. So, how exactly does an alcohol interlock work and how is this system used around the world? Here are the details...

HOW DOES AN ALCOHOL INTERLOCK WORK?

An alcohol interlock measures the alcohol concentration in the blood using a sample taken from the driver's breath. Before starting the vehicle, the driver performs an alcohol test by blowing into the device. If the blood alcohol level is below the set limit, the vehicle starts normally. However, if the alcohol level exceeds the limit, the system intervenes and prevents the vehicle from starting. Modern alcohol interlocks have the capability to perform periodic measurements even after the vehicle has been started. This ensures that the driver remains alcohol-free throughout the journey.

WHEN WAS THE ALCOHOL INTERLOCK REGULATION PUBLISHED IN TURKEY?

In Turkey, with a decision published in the Official Gazette on March 14, 2025, the alcohol interlock was made mandatory for certain vehicles. This decision was taken to increase traffic safety and prevent drunk driving. The system will be implemented primarily in commercial vehicles and vehicles used for public service. The alcohol interlock aims to prevent traffic accidents by stopping drivers from operating vehicles while under the influence of alcohol.

IS ALCOHOL INTERLOCK USE COMMON WORLDWIDE?

In the USA, the alcohol interlock is used as a condition of probation, especially for drivers convicted of drunk driving offenses. In European Union countries, preparatory work is underway for the installation of alcohol interlocks in new vehicles. This system is being promoted in many countries to reduce traffic accidents and ensure driver safety. A similar process is being followed in Turkey, with plans to make the alcohol interlock system mandatory for general use.

HISTORY OF THE ALCOHOL INTERLOCK

Alcohol interlock technology was first developed in 1969. In the 1980s, it began to be used more widely alongside alcohol detection devices. Some states in the USA began using alcohol interlock systems in probation programs in the mid-1980s. California was the first state to legally implement this system. In the European Union, preliminary work for the installation of alcohol interlocks in new vehicles continues. In Turkey, it is expected that this system will soon become mandatory for general use.

News Source: 12punto