OK CDL HazMat Practice Test 3 2025

Oklahoma needs more Hazmat drivers, and adding the Hazardous Materials (Hazmat) endorsement to your CDL can unlock higher pay and more job opportunities. This is largely due to the extra steps required by the U.S. government to obtain the HazMat endorsement. Many drivers do not tackle the extra steps and miss out on the much larger pool of opportunities they present. From petroleum and natural gas to agricultural chemicals and industrial explosives, the Sooner State depends on the safe transport of hazardous cargo every day.

Major employers such as Devon Energy, Chesapeake Energy (Oklahoma City), ONEOK (Tulsa), Phillips 66 (Bartlesville), Cargill, Simplot, and Linde (Tulsa) rely on certified drivers to move hazardous products throughout the state and beyond. Whether you’re crossing the plains, navigating the Ouachita and Ozark Mountains, or maneuvering rural low-maintenance roads, this endorsement adds versatility to your CDL, making you substantially more marketable in your field.

To qualify, drivers must clear three major hurdles. First, you’ll need to ensure that all Entry-Level Driver Training (ELDT) requirements have been met. Second, you must pass a Transportation Security Administration (TSA) fingerprinting and background check. While you wait for what can often be weeks for these results, you can use that time to study for the final hurdle: the Oklahoma CDL Hazmat Knowledge Test. The official test covers federal regulations, handling practices, packaging, quantity limits, and cargo configurations. A score of 80% or higher on the test is required for approval (Oklahoma CDL Handbook 2025).

Preparation is critical, and the official exam covers a lot of material. As such, our experts have created online Hazmat practice tests that simulate real exam questions and provide instant feedback on each response you provide. That instant response is key to your learning the material faster and more efficiently, as it trumps other methods that save all assessment comments for the end of the practice exam. Furthermore, this practice test is just one of our series of Oklahoma-specific HazMat materials. Check out another test here: https://driving-tests.org/oklahoma/ok-cdl-hazmat-practice-test/.

Our Oklahoma series also includes practice tests for categories like the Air Brakes Test and the Combination Vehicles Test. Be sure to check out all of your CDL options!

Once all hurdles are cleared, visit the Oklahoma DPS with the necessary documents, pay the fee, and pass the exam. With this endorsement, you’ll be ready to take advantage of Oklahoma’s energy, agriculture, and industrial transport opportunities, and significantly increase your earning potential.