Colorado Department of Revenue
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Rocky Mountain Road      

The Interlock device must be serviced every 60 days. An Interlock-restricted driver who fails to report for device servicing is subject to a license suspension with no driving until that driver comes back into compliance. Any driver whose interlock lease is cancelled by the provider or before the driver’s requirement is completed will be suspended until the driver enters into a new lease agreement.


If the device prevents operation of the vehicle after detecting alcohol in three of any twelve consecutive months, the interlock restricted driver must keep the interlock device and be under the interlock restriction for an additional year.


More Interlock Information: