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Double Triple Test | Missouri 2026 #2 Page 3 of 3
Train for FREE with our Missouri CDL double triple practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a MO CDL double triple license in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements may vary from state to state.
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15 . Maintaining a cushion of space between your vehicle and the vehicle ahead is:
For safe driving, it is essential that you maintain cushions of space on all sides of your vehicle. This helps to ensure that you will have time to take appropriate action if a problem arises.
16 . Air tank drains should:
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Manually operated air tank drains must be opened daily to remove this build-up.
17 . Which of the following is a sign that brakes will need repair?
When inspecting your brakes, you should check for cracked drums; shoes or pads covered in oil, grease, or brake fluid; and shoes that are missing, broken, or worn dangerously thin.
18 . A trailer that is not at the proper height:
Before coupling together a tractor and a trailer, you should make sure the trailer is at the proper height. If the trailer is too low, the trailer nose may be damaged. If the trailer is too high, it may not be able to couple correctly.
19 . When starting an engine, oil pressure should come up to a normal level:
Look at your truck's gauges when starting the engine. The oil pressure in an engine should come up to a normal level within seconds of the vehicle's engine being started.
20 . When approaching your vehicle as part of your pre-trip inspection, you should look for what as a sign of trouble?
When approaching your vehicle for an inspection, you should look underneath the vehicle for fresh leaks of oil, coolant, grease, or fuel. Seeing a fresh puddle of any of these fluids could indicate a safety issue with your vehicle.
2026 Missouri | Frequently Asked Questions
To acquire a CDL Tank endorsement in Missouri, you need to pass the knowledge test specific to tank vehicles. You can prepare for the test using the Missouri CDL manual. Visit a local Missouri Driver License Office to take the test. Passing this test allows you to legally operate commercial vehicles designed to transport liquid or gaseous materials.
To obtain a CDL Tank license in Missouri, you must have a basic CDL license first. Then, you'll need to pass the Tank Vehicle endorsement test. This test covers the knowledge of tank vehicles, inspecting tank vehicles, driving tank vehicles, and safe driving rules. You may also need additional endorsements depending on the vehicle's specific requirements.
While Missouri doesn't explicitly require specific training or experience to get a CDL Tank endorsement, it's beneficial to have practical training. This helps in passing the Tank Vehicle endorsement test, which covers topics like inspecting tank vehicles and safe driving rules. Prior experience can also be useful but isn't mandatory.
Yes, in Missouri, to obtain a CDL Tank endorsement, you need to pass an additional written test called the Tank Vehicle endorsement test. This test covers the knowledge of tank vehicles, their inspection, and safe driving rules. Note that this is in addition to the general CDL written exam.
The written test for the CDL Tank endorsement in Missouri includes subjects such as the safe operation of tank vehicles, tank vehicle inspections, proper loading and unloading procedures, and the transportation of hazardous materials. Additionally, you may be tested on topics like emergency response and the use of emergency equipment specific to tank vehicles.
The CDL Tank endorsement written test in Missouri focuses on the knowledge rather than practical skills or maneuvers. It covers subjects like inspecting tank vehicles, recognizing high center of gravity, handling surge, driving tank vehicles, and safe driving rules and practices specific to tank vehicles. There's no separate skills or road test for the Tank endorsement.
In Missouri, drivers with a CDL Tank endorsement must adhere to specific regulations. For instance, they must always ensure the tank is not overloaded and the load is properly balanced. Additionally, they must follow safety protocols while loading and unloading. Violation of these guidelines can lead to endorsement revocation or legal penalties. Note that endorsements don't grant authority to transport hazardous materials unless you also have a Hazmat endorsement.
No, in Missouri, you cannot legally transport liquid or gas materials without a valid CDL Tank endorsement. This endorsement is required for drivers who operate commercial vehicles transporting liquids or gases in a tank or tanks having an individual rated capacity of more than 119 gallons and an aggregate rated capacity of 1,000 gallons or more. Violations can lead to serious penalties.
In Missouri, the CDL Tank endorsement can be added to your existing Commercial Driver's License. You don't need a fresh application for a new license. However, you must pass the Tank Vehicle written test. Once you pass the test, the endorsement will be added to your CDL, enabling you to legally transport liquid or gas materials.
Yes, to handle hazardous materials with a CDL Tank endorsement in Missouri, drivers must also have a Hazardous Materials (H) endorsement. This requires passing a written test on federal and state regulations for transporting hazardous materials. Additionally, drivers must undergo a federal background check and fingerprinting. Failure to comply with these regulations can result in severe penalties.