DWI and the Ignition Interlock Device aka Deep Lung Device by Bo Kalabus

<strong>What is an Ignition Interlock Device?</strong>An ignition interlock device (also known as a “Deep Lung Device” or “DLD”) is a small device that is installed in a car that is designed to measure a person’s blood alcohol level (BAC). If a person blows into the device and it registers a BAC level that is above a certain amount, the car will not start. Moreover, to prevent an intoxicated person from having a sober individual blow into the device so he/she can start the car and drive away, the driver must also give breath samples during the drive. The devices can act as log book and record data such as test results for alcohol levels, engine stops and starts and any attempts to tamper with the device.

<strong>Overview of Ignition Interlock Laws</strong>Texas law gives judges discretion to order the installation of interlock devices as a penalty for the first conviction or as a condition of bond. This means that the judge is not required to order that one be installed if a person is convicted of drunk driving, but may do so in the interest of the general public.
Texas makes installation of an ignition interlock device mandatory upon conviction for certain types of DWI or drunk-driving offenses or under certain circumstances, such as:
• Repeat convictions (second or third offenses)
• High BAC levels
• BAC of over .15
• DWI with a minor (under 16 years old) in the car

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