- The fine print
- Camping (including occupying a vehicle for temporary lodging) prohibited at interstate rest areas (SDCL 31-7-15, -16). Temporarily resting in a vehicle expressly permitted up to 3 consecutive hours; CMV drivers under 49 CFR 395 get up to 10 hours (SDCL 31-7-17).
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.
You get 3 consecutive hours at a South Dakota interstate rest area, 10 if you drive a commercial vehicle under federal hours-of-service rules. A full night in your vehicle is off the table: state law defines that as camping, and camping at rest areas is prohibited.
What South Dakota actually says
Most states leave rest area rules to a DOT policy page. South Dakota wrote them into statute. SDCL 31-7-15 and 31-7-16 prohibit camping at interstate rest areas, and the definition includes occupying a vehicle for temporary lodging, not just pitching a tent.
Then SDCL 31-7-17 defines what you are allowed to do instead. “Temporarily resting” means stopping, parking, or occupying a vehicle “for not more than three consecutive hours.” Drivers of commercial motor vehicles subject to 49 CFR Part 395 get “not more than ten consecutive hours,” which lines up with the federal off-duty rest requirement. We verified this against the statute text on 2026-07-17.
No camping vs no overnight parking
In many states these are separate questions. In South Dakota the statute closes the gap: because occupying a vehicle for lodging counts as camping, “I’m not camping, I’m just sleeping in my car” does not work here. The 3-hour resting allowance is the whole permission. A nap inside it is expressly legal. Settling in for the night is not.
How to check locally
The statute is statewide, but the posted sign at any given rest area is the authority on the ground, and it beats this page. Dial 511 in South Dakota for road and closure info. If you need a legal full night of sleep, a truck stop, a paid campground, or free camping on public land in South Dakota are the honest options. For rules beyond rest areas, see sleeping in your car in South Dakota.