CDL Tanker Endorsements: Do You Need an N or X Endorsement?

In the context of commercial driving, an endorsement is an additional qualification that allows drivers to operate specific types of vehicles or transport particular types of cargo.

These endorsements are crucial for ensuring safety and compliance with federal and state regulations. They indicate that the driver has undergone specialized training and testing beyond the standard requirements for a Commercial Driver’s License (CDL).

For instance, endorsements can include qualifications for operating tank vehicles, carrying hazardous materials, or transporting passengers. Each endorsement requires passing specific written tests and, in some cases, practical exams to demonstrate competence.

By obtaining these endorsements, drivers not only enhance their skills but also expand their job opportunities, often leading to higher pay and greater job security

When considering whether you need an N or X endorsement for your Commercial Driver’s License (CDL) in the context of tanker operations, it’s important to understand what each endorsement entails.

N Endorsement

The N endorsement is specifically required for truck drivers who operate tank vehicles designed to transport liquids or gases.

This endorsement is mandatory if you’re hauling over 1,000 gallons of liquid or gas.

Examples:

  • Fuel Tankers: Vehicles transporting diesel or gasoline
  • Water Tank Trucks: Used for construction sites or municipal services
  • Chemical Tankers: Carrying non-hazardous chemicals for various industries

Obtaining this endorsement ensures that you have the necessary training and knowledge to safely handle the complexities associated with transporting these materials, which can include issues like weight distribution and liquid sloshing​.

X Endorsement

The X endorsement combines both the N endorsement and a Hazmat endorsement (H). This means that with an X endorsement, you are certified not only to drive tank vehicles but also to transport hazardous materials. This endorsement is crucial for drivers who will be transporting liquid hazardous materials, such as gasoline or chemicals​.

Examples:

  • HAZMAT Tankers: Vehicles that carry liquid hazardous materials such as certain chemicals, fuels, or waste
  • Oil Tankers: Specifically transporting oil products, which can be classified as hazardous depending on the context
  • Liquid Propane Gas (LPG) Transport: Vehicles that transport propane or butane, which are considered flammable gases

To obtain an X endorsement, you must pass additional tests that cover both tanker and hazardous materials regulations.

Do You Need an N or X Endorsement?

  • If you are only transporting liquids or gases (non-hazardous): You need the N endorsement.
  • If you are transporting hazardous materials: You will require the X endorsement in addition to the N endorsement.

Requirements for Obtaining the Endorsements

You can obtain endorsements by visiting your local DMV office. Bring your current CDL and any required documentation. You may also be able to schedule an appointment to take the written tests.

You’ll typically need to meet the following criteria:

  • Be at least 18 years old
  • Hold a valid CDL (Class A or B)
  • Pass a written knowledge test specific to the endorsement type
  • For the Hazmat endorsement (part of the X), pass a TSA background check
  • Pay any applicable fees, which vary by state (usually between $10 to $50)

Benefits of Endorsements

Obtaining N and X endorsements offers numerous advantages for CDL drivers:

Expanded Job Opportunities: These endorsements open doors to a broader range of job positions, as many employers specifically seek drivers qualified to operate tank vehicles and handle hazardous materials.

Higher Earnings: Drivers with these endorsements often enjoy higher salaries due to the specialized skills required. Employers are willing to pay more for certified drivers who can manage complex cargo safely.

Enhanced Safety Skills: The training required for these endorsements emphasizes safety protocols and regulations, equipping drivers with vital skills to navigate potentially hazardous situations.

Legal Compliance: Holding the proper endorsements ensures that drivers adhere to state and federal regulations, protecting them and their employers from legal issues and fines.

Ongoing Training Access: Many companies offer additional training for drivers with N and X endorsements, keeping them informed about the latest safety practices and industry standards.

Boosted Employer Reputation: Companies employing drivers with these endorsements enhance their reputation as safety-oriented and compliant, fostering trust and potentially attracting more business.

Impact on Insurance and Liability

Another aspect to consider is how having an N or X endorsement can impact insurance premiums and liability coverage. Trucking companies often face higher insurance costs for drivers without proper endorsements. In case of an accident involving a tanker carrying hazardous materials, not having the correct endorsement could lead to substantial liability issues​.

In summary, if you aim to drive tankers carrying liquids or gases, you’ll need the N endorsement. If you’re also planning to handle hazardous materials, you will need the X endorsement. It’s essential to ensure you meet all the requirements for the desired endorsement and understand the responsibilities that come with it. For more detailed information on obtaining these endorsements, consider checking your local Department of Motor Vehicles (DMV) or a relevant trucking authority in your state.

Are you a freight broker? We can help you get new shipper leads with active loads…

NEW! Shipper Leads for 2025