Final answer:
A CDL is typically required for vehicles designed to transport 16 or more people, including the driver. Since the vehicle in question carries 15 passengers plus the driver, a CDL is likely needed.
Step-by-step explanation:
The question of whether a CDL (Commercial Driver's License) is needed to operate a vehicle designed to carry 15 passengers not including the driver depends on the regulations set forth by the Department of Transportation in the United States. Usually, a CDL is required when operating vehicles designed to transport 16 or more people (including the driver), or when driving any vehicle weighing over 26,001 pounds. However, different states may have additional requirements or exceptions, so it is important to check local laws.
Considering the vehicle is designed to carry 15 passengers, without including the driver, it suggests that the total number of occupants would be 16. Therefore, it is likely that a CDL would be required to operate this type of vehicle legally. It is crucial for the driver to be properly licensed to ensure the safety of all passengers and comply with traffic regulations.