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New Jersey takes DWIs very seriously. If you were charged with a DWI, it is likely you are required to install an ignition interlock device on your car. If you have questions regarding this device or any other concerns about your DWI charge, contact our firm today. Our experienced New Jersey criminal defense attorneys have experience defending countless amounts of individuals facing DWI penalties. We are prepared to protect you and your future. Continue reading on to learn more about these devices in New Jersey.

What does an ignition interlock device do?

An ignition interlock device is an attachment that is installed into your car. If you were charged with a DWI and you were required to install an ignition interlock device in your car, you will have to provide a sample of your breath into the device every time you want to start your vehicle. If you blow into the device with a blood alcohol concentration above .025%, your car will not start. Additionally, as you are driving, the device may ask you to provide breath samples during your drive. If you fail to provide a breath sample when the device requests one, an alarm will sound and make you pull over.

If you have been charged with a DWI and have been ordered to install an ignition interlock device on your vehicle, it is in your best interest to contact one of our experienced New Jersey criminal defense attorneys. We are committed to protecting you and your rights.

What criteria does an ignition interlock device have to meet?

The New Jersey Motor Vehicle Commission requires that the ignition interlock device satisfies the following criteria:

  • The device must be able to detect a blood alcohol content of 0.05 percent
  • The device must be installed at a service center designated by the Motor Vehicle Commission
  • The device must be serviced every 67 days
  • The device requires a label warning of civil liability or prosecution for anyone who tampers with the device

If you are unsure about whether or not your ignition interlock device meets the standards of The New Jersey Motor Vehicle Commission, do not hesitate to reach out to our firm to speak with one of our legal experts.


Here at McNerney & McAuliffe, we understand how confusing certain legal matters can be, which is why we are here to provide clients from all walks of life with the experienced, compassionate legal guidance they need. If you require the legal assistance of an attorney to help you through a criminal law matter, personal injury matter, family law matter, or otherwise, you can turn to us. Contact McNerney & McAuliffe today to learn more about what we can do for you.

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