There's a zero-tolerance law in bucks county. It doesn't matter if you're prescribed a medication, use something over the counter, legal or otherwise, if you get stopped for suspected DUI and the toxicology comes back with anything in your system, it's a DUI.

This is not entirely accurate.

There is a tiered guideline that is used to determine whether or not an interlock is required and the length if time from the previous dui is also a factor.

It doesn't matter if the offender has a car or not, if it is ordered that the offender have an interlock installed and an interlock endorsement, they are not allowed to operate the vehicle, regardless of ownership.

Of the offender gets caught driving while under suspension or without an interlock device installed on the vehicle they are operating or without the endorsement, it's mandatory jail time.

In order for an offender to have their license restored (in PA), offender needs to have an interlock endorsement for the length of time that it is needed to have the interlock installed in a car, if it is ordered that you have an interlock installed.

Offender is not allowed to operate any vehicle, unless it has an interlock installed - regardless of whether the offender owns it or not.

Offender needs to still have the interlock endorsement shown on the license for the ordered amount of time. Doesn't matter if they have a car or not.

If at any time that the offender is caught driving a vehicle without either the endorsement or the interlock installed in the vehicle they are operating, it is mandatory jail time.

PAdui.org has some info