- The fine print
- Checked Transportation Article 21-1003: location-based parking prohibitions only. HB1164 (2025 Right to Rest Act), which would have barred local bans on sleeping in a parked vehicle, did not pass, confirming regulation is local. Maryland courts recognize a shelter doctrine (Atkinson v. State, 1993) for DUI physical control. Local ordinances vary by city.
Parking overnight to sleep and camping are two different acts under most rules. Camping usually means setting up outside the vehicle: a tent, an awning, chairs, a fire. Staying inside a legally parked vehicle is often treated differently. Which one applies to you.
The posted sign and the officer on the ground beat this table. Rules change; the date above is when we last checked.
Sleeping in a parked car is not against Maryland state law. Transportation Article 21-1003, the state’s parking prohibition section, is a list of places a vehicle may not stand, verified July 17, 2026, and sleeping appears nowhere in it. The General Assembly also confirmed where the power sits by what it declined to pass: HB 1164, the 2025 Right to Rest Act, would have barred local governments from banning sleep in a parked vehicle, and it failed. Regulation stays local.
What state law says
The state tells you where not to park. Whether you may sleep in a legally parked car is a question each Maryland city and county answers with its own ordinance, and those vary. No statewide ban is the verified finding; it does not mean the county you are in has no rule. The failed 2025 bill matters because it removes any doubt about the structure: the legislature looked at taking this question away from local governments and left it with them.
The DUI wrinkle: the shelter doctrine
Maryland DUI law can reach a person in physical control of a parked vehicle, and Maryland courts recognize what is called a shelter doctrine, from Atkinson v. State (1993). The idea is that a court can distinguish someone using a parked car purely as shelter from someone in control of a vehicle they might drive. Be careful with this. It is a doctrine a court applies to the specific facts after an arrest has already happened, not a rule you can cite at the window and not a guarantee. We are not lawyers and this is not legal advice. The version of car sleeping that needs no doctrine is the sober version.
Where people actually get in trouble
Private lots without the operator’s permission, which the property owner resolves with a tow. Posted streets and public lots, enforced from the sign under local ordinance. And the impaired-driver scenario above. None of it requires a state sleeping statute.
How to check locally
The posted sign beats this page and everything else you read. Then the city or county code, searching its parking chapters, or the non-emergency line for a direct answer. For a spot that does not depend on an ordinance, truck stops and store lots that allow overnight parking are one operator’s yes, and Maryland rest areas post their rules at the facility.