Pennsylvania DUI After Same-Day Marijuana Use

Attorney Answer

Here is the part the earlier answer got wrong, and it is the part that matters most to you: in Pennsylvania, a marijuana DUI does not always require the Commonwealth to prove you were actually impaired.

75 Pa. Cons. Stat. § 3802(d) contains several distinct controlled-substance DUI offenses, and they carry very different burdens of proof. One is an "any amount" provision keyed to a Schedule I controlled substance in the blood. A second is a separate provision reaching a metabolite of such a substance. A third is an impairment-based subsection, which does require proof that your ability to drive safely was affected.

Under the first two, the question is what was in your blood — not whether you felt high, and not whether you drove badly. That is why "I wasn't high," which may be entirely true, is not by itself an answer to the charge. It is also why the older advice that "the law considers whether your ability to drive was impaired, not just if you felt high" is only true of one branch of the statute, and not the branch most people in your position are charged under.

So the first thing to establish is not how you felt. It is which subsection you are actually charged under, and what the blood report says was detected — active THC or a metabolite. Those two facts determine everything about how this case is defended.

I am not going to guess what will happen to you. No one can, from a summary, and anyone who gives you a number is making it up.

What you can do

1. Do not just wait for mail. The criminal complaint and the preliminary hearing notice go to the address on your license — confirm that address is current, and call the clerk of courts in the county where you were stopped to check the docket. Missing a preliminary hearing produces a bench warrant. 2. Get the blood report and the complaint as soon as they exist, and identify the exact subsection of § 3802(d) charged. 3. Retain a lawyer before the preliminary hearing, not after it. 4. Gather your medical records from the month-long hospitalization after the dog attack, the medications you were prescribed and declined, and anything documenting your pain and injuries. This bears on the driving, on the appearance of your eyes, and on how a court and a prosecutor see you. 5. Send a written preservation request for the MVR and body camera footage showing the braking, the stop and the field tests. 6. Write down now, dated, what the officer said, what tests you were asked to perform, what you told them, and the conditions you performed the tests under. 7. Ask your lawyer whether you qualify for your county's first-offender diversion program. For a first DUI with no serious injury to anyone else, that is usually the first conversation worth having. 8. Stop posting about the case anywhere, and do not explain yourself to police again.

⏱ Time limits apply. Your first hard deadline is the preliminary hearing, which is set by notice mailed to your address of record — it can arrive with little lead time, and missing it produces a bench warrant. Separately, if you declined any breath or blood test, PennDOT will issue a suspension notice with its own short appeal window running from the notice date. That license case is a different track from the criminal case, uses a different standard of proof, and can come out the opposite way; one does not decide the other. Both timelines depend on your specific facts, so open every envelope the day it arrives and bring it to a lawyer.