Which document must a commercial driver possess while operating a commercial vehicle?

A valid commercial driver's license (CDL) is essential for any individual operating a commercial vehicle. This document signifies that the driver has met the necessary training and testing requirements mandated by law to safely operate large or complex vehicles, which often include trucks, buses, and other commercial vehicles. Holding a CDL ensures that the driver is knowledgeable about the specific regulations and safety protocols required for commercial driving, including the ability to handle various driving conditions and emergency situations.

While vehicle registration, insurance policy documents, and vehicle inspection reports are important for the legality and safety of the vehicle itself, they do not pertain directly to the qualifications or capabilities of the driver. A commercial driver can only legally and safely operate a commercial vehicle if they possess a valid CDL, making it a critical requirement for this role.