| Increasing numbers of states are mandating that first | | | | permissible levels for engine operation in cars equipped |
| time DUI offenders put a breath alcohol ignition interlock | | | | with an ignition interlock device. Customarily, the limits |
| device in their cars if they wish to have their driver's | | | | range from .02% up to .04% concentration of alcohol in |
| licenses restored in the aftermath of a suspension or | | | | the bloodstream. If the driver's blood alcohol content |
| revocation of their privileges. Such an ignition interlock | | | | measures lower than the designated limit, the car's |
| system is a mechanism able to measure an individual's | | | | engine will start normally. Should the device give a |
| blood alcohol content prior to allowing the car's engine | | | | blood alcohol reading greater than the permissible limit, |
| to start. | | | | the driver will be required to wait another half an hour |
| Different states are likely to put in place their own | | | | prior to being able to try to start the engine again. |