The Pennsylvania Department of Transportation does not have the independent authority to order the installation of an ignition interlock device, even if the trial court incorrectly failed to order the penalty, the Commonwealth Court has ruled.

The decision in Schneider v. PennDOTarose out of a decision by the Bucks County Court not to impose the interlock installation requirement upon a man who had two DUI convictions, one of which involved the driver’s participation in the Accelerated Rehabilitative Disposition program.