Hello again Peter and thank you for your reply. There is a fairly good chance that you will at the very least get a ticket/summons for driver on an expired registration. That is fairly easy to fix by renewing it and taking the proof to court
. Many times the judge will dismiss the charge depending on the defendant's prior criminal
history. If not, there will be a fine.
The bigger issue here is the possible DUI. The police can get the results of your blood work from the hospital and if it shows you were above the legal limit, then you will receive a summons and charge for a DUI or DWI. Of course at that point you want to hire a local criminal defense attorney who routinely handles DUI's to assist you with your case. They might be able to keep your statements out of evidence and maybe even the blood work. If not, they might get the State to plead you down to a wet and reckless or just decide to plead you not guilty and make the State prove their case. That though will be between you and your attorney.
But to directly answer your question, you can still be charged with the DUI and driving without registration at any time up to when the statute of limitations runs. In Maryland there is, unfortunately, no SOL for misdemeanors
that can potentially carry jail time. You can see a summary of potential punishment for a first time DUI or DWI by going to: http://www.drivinglaws.org/resources/dui-dwi/dui-laws-state/first-offense-duidwi-maryland
Please let me know if you need any clarification. I would be glad to assist you further if I can.