Which of the following vehicles falls under the Commercial Driver License category?

The correct choice is semi-trucks and school buses because they meet the criteria set by the Federal Motor Carrier Safety Administration (FMCSA) for requiring a Commercial Driver License (CDL). A CDL is needed for operating vehicles that are designed to transport a certain number of passengers or a specific weight of cargo, or that otherwise operate under commercial regulations.

Semi-trucks and school buses are considered commercial vehicles because they are used for transporting goods or people as part of a business or in a professional capacity, requiring specialized skills, knowledge, and training to ensure safety on the roads. This is why a CDL, which involves passing specific tests that demonstrate the knowledge and skills necessary to operate such vehicles, is mandated for drivers of these types of vehicles.

In contrast, motorcycles, personal cars, and bicycles do not fall under this category as they do not meet the same weight, passenger capacity, or business use criteria that necessitate a commercial driver’s license.