Carroll County, MD Parking Rules: Commercial & Oversized Vehicles (2026)

056 defines a COMMERCIAL VEHICLE as any motorized vehicle of 10,000 pounds or more gross vehicle weight or capability, or any trailer rated at 10,000 pounds or more or used for commercial purposes; motor homes, recreational vehicles, and school buses owned by the resident are expressly carved out of that definition and are not restricted by this section. On a single-family lot of one acre or less, the code permits exactly one commercial vehicle as an accessory use, and it must be actively used by a full-time resident, parked entirely within the lot's boundary lines, and kept at least 15 feet back from the public right-of-way without blocking sight distance at driveways or intersections.

Lots larger than one acre get a second vehicle under the same conditions. Outside the residence zoning districts, lots of ten acres or more can host up to five commercial vehicles as an accessory residential use, but no more than two of those five may be visible from the nearest public road or from the first floor of a neighboring residence, meaning the rest must be screened or parked out of sightlines. 056(E) exempts outright. Because the section sits inside the county's general zoning enforcement chapter, a resident who parks an extra flatbed or box truck beyond the permitted count is out of compliance with the accessory-use standard for that property's zoning district, not a separate parking ordinance.