CDL Tanker Endorsement Practice Exam

What is required to drive a tank vehicle with individual tanks over 119 gallons?

1. A standard driver's license

2. A tank vehicle (N) endorsement

3. A commercial vehicle (C) endorsement

4. An additional freight transportation license

The correct answer is: A tank vehicle (N) endorsement

To operate a tank vehicle with individual tanks that have a capacity of over 119 gallons, obtaining a tank vehicle endorsement, commonly referred to as the “N” endorsement, is essential. This endorsement is specifically required for drivers who wish to handle tank vehicles, ensuring they are properly trained in the unique handling characteristics and safety protocols associated with transporting liquid cargo. The reason this endorsement is crucial lies in the potential hazards presented by the transportation of liquids, which can shift during transit, affecting vehicle stability and control. Drivers must demonstrate knowledge of specific regulations, loading and unloading procedures, and emergency response protocols relevant to hauling liquid products. Other types of licenses or endorsements differ in their purposes and regulations. A standard driver's license does not provide the necessary training or authorization to handle liquid tanks, while a commercial vehicle endorsement covers different classifications of vehicles but does not specifically pertain to tank vehicles. Similarly, an additional freight transportation license is not a recognized requirement for tank vehicles; the “N” endorsement is the standard credential needed for such operations.