What does the acronym CDL stand for in trucking?

The acronym CDL stands for Commercial Driver's License. This specific designation is essential for individuals who operate large or heavy vehicles, including tractor-trailers, buses, and other commercial motor vehicles. A Commercial Driver's License is a certification that demonstrates the driver's ability to operate these types of vehicles safely and legally on public roads.

To obtain a CDL, drivers must pass a series of rigorous tests that assess their knowledge of vehicle operation, safety regulations, and their ability to manage the specific challenges posed by these larger vehicles. The distinction in the name also emphasizes the driver's professional status, as holding this license typically requires meeting certain age, health, and training requirements.

In contrast, other terms such as "Commercial Driving License," "Certified Driver's License," and "Central Driving License" do not accurately reflect the official terminology used in the industry. The use of “Commercial Driver's License” specifically indicates the legal framework governing the operation of commercial vehicles, which is why this answer is the correct choice.