Which type of vehicle does NOT require a CDL?

Recreational vehicles used for personal trips do not require a Commercial Driver's License (CDL) because they are typically not used for commercial purposes. A CDL is mainly required for drivers operating vehicles designed for commercial use, including transporting goods or passengers for compensation. Since recreational vehicles, such as RVs, are used for personal enjoyment and do not engage in commercial activities or meet the specific requirements that necessitate a CDL, the drivers of these vehicles can operate them with a standard driver's license.

In contrast, school buses, commercial delivery trucks, and ambulances are all classified under vehicles that typically require CDL, as they are used for transporting goods or individuals in a professional capacity. Each of these vehicles needs to adhere to stricter safety regulations and operator qualifications, making a CDL necessary for their operation.