www.seiferflatowlaw.com When you've been charged with driving while impaired or DWI, the officer will ask you to submit a sample of your breath or, in certain circumstances, he may take you to the hospital to draw your blood. The breath or blood sample is analyzed for alcohol concentration. If the sample comes back at a .15 or higher, which is nearly twice the legal limit of .08, AND you are convicted of the offense, then you will be required to install an ignition interlock device in your vehicle for at least a one year period. This is also often required for repeat offenders regardless of the alcohol concentration. This device requires you to blow into it to start your car. Besides being a major inconvenience, it also costs a lot of money for installation and for monthly usage fees, it has to regularly be maintained, and it often malfunctions. If you are in fact required to install the interlock device, then you will be unable to obtain a limited driving privilege or get your driving privileges reinstated without proof of installation. If it is required, there is no way around it. You cant simply wait it out and hope that years down the road DMV wont require it.