A Contractor and Members Oil Transfer License is for hauling fuel
A Contractor and Members Oil Transfer License is a commercial driver credential that lets you transport petroleum products — heating oil, diesel, gasoline, and similar fuels — in a tank truck or tanker. It is not a standard driver's license; it is a specialized endorsement or separate license class that sits above a regular commercial driver's license (CDL).
You need this license if your job involves picking up fuel at a refinery or distribution terminal and delivering it to gas stations, heating oil customers, or other commercial sites. The license proves you understand the hazards of transporting flammable liquids, know the safety rules, and can handle the vehicle legally.
The exact name and requirements for this license vary by state. Some states call it a Hazmat endorsement on a CDL; others issue it as a separate commercial license class. A few states use the term "Oil Transfer License" specifically. Before you start studying, confirm what your state calls it and which agency issues it — usually your state's Department of Motor Vehicles or Department of Transportation.
Key Takeaways
- This license authorizes you to transport fuel and other petroleum products in a tank truck, and it is required by law if that is your job.
- You must first hold a valid commercial driver's license (CDL) or meet the requirements to get one before you can add this endorsement or license class.
- The written test covers hazardous materials regulations, tank truck operation, safety procedures, and what to do in an emergency or spill.
- Some states require a medical certificate and a background check before you can transport hazardous materials.
- Your state's Department of Motor Vehicles website lists the exact documents you need, the test fee, and whether your state uses an endorsement or a separate license class.
How this license fits into the CDL system
A Contractor and Members Oil Transfer License sits on top of a commercial driver's license. You cannot get it without first holding a valid CDL, or at minimum meeting the requirements for one (age, medical certificate, written test, road test).
In most states, this license is a Hazmat endorsement — an add-on to your CDL that authorizes you to haul hazardous materials. In a few states, it is a separate commercial license class that requires a CDL as a prerequisite. Either way, you are building on an existing commercial credential, not replacing it.
The reason is practical: driving a fuel tanker requires all the skills of driving any large truck (air brakes, backing, load awareness, vehicle control), plus specialized knowledge about flammable liquids. The CDL proves you have the first set of skills; the oil transfer endorsement or license proves you have the second.
What you need before you test
Before you can take the written test for this license, you must have or be ready to get a CDL. That means you need a valid medical certificate (also called a DOT medical card) issued by a certified medical examiner. This certificate confirms you are physically able to drive a commercial vehicle — you will need to pass a vision test, hearing test, and basic physical exam.
You will also need proof of identity (a passport, birth certificate, or state ID), proof of Social Security number, and proof of your state residency. Some states require a background check before they issue a Hazmat endorsement; if yours does, you may need to submit fingerprints or authorize a records search.
A few states require proof that you work for a fuel transport company or contractor before they issue this license. Check your state's requirements on its DMV website — the rules differ, and starting with the right documents saves time.
The written test and what it covers
The written test for a Contractor and Members Oil Transfer License focuses on the hazards and rules specific to transporting fuel. You will answer questions about flammable liquid properties, tank truck design, loading and unloading procedures, emergency response, and what to do if you spill or have an accident.
The test also covers federal regulations from the Department of Transportation (DOT) and the Pipeline and Hazardous Materials Safety Administration (PHMSA). These rules govern how fuel must be labeled, placarded, documented, and transported. You need to know the rules for your specific cargo — heating oil has different requirements than gasoline, for example.
Most states offer a study guide or manual on their DMV website. Some provide practice tests online. The test itself is usually 30 to 50 questions, and you must score at least 80 percent to pass. If you fail, you can retake it after a waiting period (usually a few days to a week).
Road test and practical skills
After you pass the written test, some states require a road test in a tank truck or tanker to prove you can operate the vehicle safely. The examiner will watch you perform basic maneuvers — backing, turning, stopping — and may ask you to demonstrate knowledge of the truck's systems, such as how to check the tank seals or operate the discharge valve.
Not all states require a separate road test for this endorsement if you already hold a CDL and have passed the CDL road test. Check your state's rules. If a road test is required, you will need access to a tank truck for the exam — usually your employer provides one, or you arrange it through a commercial driving school.
Fees and how long it takes
The cost of a Contractor and Members Oil Transfer License varies by state. Some states charge a flat fee for the endorsement (typically $10 to $50); others charge based on the length of the license (three years, five years, or longer). A few states charge an additional fee if you need a background check or fingerprinting.
The timeline depends on whether you already hold a CDL or need to get one first. If you have a CDL, adding the endorsement usually takes one to two weeks from the time you pass the written test. If you need to get a CDL first, add several weeks for the written test, road test, and processing.
Some states process applications faster if you explore in person at a DMV office; others offer no difference. A few states allow you to renew this license by mail or online, while others require you to visit an office in person.
Renewal and keeping your license current
A Contractor and Members Oil Transfer License must be renewed periodically — the interval varies by state, usually every three to five years. When you renew, you may need to retake the written test, pass a medical exam, or both, depending on your state's rules.
If your CDL expires or is suspended, your oil transfer endorsement or license is suspended too. If you change jobs or move to a different state, check whether your license transfers or whether you need to get a new one. Some states recognize endorsements from other states; others require you to test again.
Keep your medical certificate current. If it expires, your CDL and any endorsements become invalid, even if the license card itself has not expired yet.
Frequently Asked Questions
Do I need this license to drive a fuel truck for my own business?
Yes, if you transport fuel as part of your business — even if you own the truck and the fuel — you need this license. The law applies to anyone hauling hazardous materials for commercial purposes, whether you work for a company or yourself. Some states have exceptions for very small quantities or specific uses; check your state's rules.
What happens if I drive a fuel truck without this license?
You can face fines, criminal charges, and civil liability if you cause an accident or spill. Your employer can also face penalties. Insurance may not cover accidents if you were not properly licensed. The consequences are serious because fuel transport is inherently dangerous.
Can I get this license if I have a criminal record?
It depends on your state and the nature of the offense. Most states conduct a background check before issuing a Hazmat endorsement. Felonies, certain drug convictions, and crimes involving fraud or dishonesty may disqualify you. Contact your state's DMV to ask about your specific situation.
Do I need to renew my medical certificate every year?
No. A DOT medical certificate is valid for two years from the date of issue (one year if you are over 65). You do not need to renew it every year, but you must have a current one to keep your CDL and oil transfer license valid. If it expires, your licenses become invalid until you get a new certificate.
Can I transfer this license if I move to another state?
Not automatically. Each state has its own licensing system and requirements. If you move, you will need to get a license from your new state. Some states recognize endorsements from other states and let you transfer without retesting; others require you to pass the written test again. Contact your new state's DMV to find out.