What is the gross weight that requires a CDL when towing a trailer?

To determine the gross weight that requires a commercial driver's license (CDL) when towing a trailer, it's essential to refer to the regulations governing commercial vehicles. In California, a CDL is typically required when the combined gross vehicle weight rating (GVWR) of the vehicle and the trailer exceeds 26,000 pounds, provided the trailer itself has a GVWR of more than 10,000 pounds. This means that if you are towing a trailer that has a GVWR greater than 10,000 pounds, you will need a CDL.

The threshold of 10,000 pounds specifically points to the weight of the trailer, which is critical in determining licensing requirements. Vehicles and their trailers are often categorized based on their weight, and ensuring that drivers meet the appropriate licensing criteria helps maintain road safety standards.

In this context, the other weights listed (8,000, 12,000, and 15,000 pounds) may not align with the licensing requirements set forth by the California Department of Motor Vehicles (DMV) for towing functionality. Specifically, only exceeding 10,000 pounds when combined with other vehicle specifications necessitates the CDL, which is what makes this choice valid for the question on gross weight when towing.