Merced County, CA Parking Rules: Oversized Vehicle Parking (2026)

Unincorporated Merced County addresses oversized vehicles through several specific rules rather than one comprehensive oversized-vehicle ordinance. The most direct on-street restriction is Section 11.12.040 of the Merced County Code, which prohibits parking or leaving standing any commercial vehicle (as defined in California Vehicle Code Section 260) with a manufacturer's gross vehicle weight rating of 10,000 pounds or more on a street in a residential district, except for active pickups, deliveries, or permitted-construction material delivery. This rule is adopted under California Vehicle Code Section 22507.5. Large recreational vehicles, boats, and trailers are governed by the Unified Development Ordinance Section 18.38.120, which restricts where and how they may be stored on residential property, including the three-foot setback and one-unit front-setback limits. For oversized vehicles on county roads more generally, the County relies on Section 11.12.010 (areas posted NO PARKING by the Road Commissioner) and the California Vehicle Code, which governs vehicle size, weight limits on highways, and removal of obstructing vehicles. There is no county ordinance establishing a blanket length limit (such as a 22-foot rule) for vehicles parked on all county streets; oversized parking is instead managed through the commercial-vehicle weight rule, the RV storage standards, and posted signage.