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Double Triple Test | Missouri 2026 #1 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 . 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.
16 . 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.
17 . Which of the following groups of people is not covered by move over laws?
Move over laws state that when approaching a stopped emergency vehicle, a driver must slow down and merge into a lane that is not next to the stopped vehicle. If a lane change is not possible, drivers should slow to a safe speed and pass with caution.
18 . Rearward amplification refers to:
The "crack-the-whip" effect is a result of rearward amplification. If not properly handled, a trailer can tip over due to rearward amplification.
19 . When driving a vehicle, rough acceleration is:
When accelerating, speed up smoothly and gradually so your vehicle does not jerk. Rough acceleration can cause mechanical damage.
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 Hazmat endorsement in Missouri, you must first have a Commercial Driver's License (CDL). After that, apply for the endorsement at a Missouri State Highway Patrol Driver Examination Station, pass the written test, and complete a federal security threat assessment. This includes fingerprinting and background checks conducted by the Transportation Security Administration (TSA).
To obtain a CDL Hazmat license in Missouri, you must already have a Commercial Driver's License (CDL). You also need to pass the Hazardous Materials Endorsement Knowledge Test, provide proof of U.S. citizenship or lawful permanent residency, complete a fingerprint-based background check, and pass the TSA security threat assessment.
When applying for a CDL Hazmat endorsement in Missouri, you need to provide proof of U.S. citizenship or lawful permanent residency. This could be a birth certificate, passport, or green card. Additionally, you'll need your current Commercial Driver's License (CDL), your Social Security card, and completed application forms for the Hazmat endorsement and TSA security threat assessment.
Yes, there is a dedicated written test for the CDL Hazmat endorsement in Missouri. The Hazardous Materials Endorsement Knowledge Test covers topics related to the transport of hazardous materials, including safety procedures, regulations, and handling techniques. You must pass this test to receive your Hazmat endorsement.
The written test for the CDL Hazmat endorsement in Missouri covers several topics related to hazardous materials. These include identifying different types of hazardous materials, understanding shipping papers and placards, loading and unloading procedures, safety rules, emergency response procedures, and federal regulations related to hazardous material transportation.
Yes, obtaining a CDL Hazmat endorsement in Missouri involves additional fees. This includes a $25.50 fee for the endorsement itself and a $86.50 fee for the required TSA background check. These fees are subject to change, so it's advisable to check with the Missouri Department of Revenue for the most current information.
Yes, obtaining a CDL Hazmat endorsement in Missouri requires a federal background check and a security threat assessment by the Transportation Security Administration (TSA). These are mandatory steps to ensure the safety and security of hazardous materials transportation. The applicant must be free of disqualifying criminal offenses to receive the endorsement.
Yes, obtaining a CDL Hazmat endorsement in Missouri necessitates specialized training. You must pass a written test based on the Hazardous Materials section of the Missouri Commercial Driver License Manual. While no specific certification is required, training helps ensure you understand how to safely transport hazardous materials.
No, you cannot transport hazardous materials in Missouri without a valid Commercial Driver's License (CDL) with a Hazardous Materials (Hazmat) endorsement. This is a federal regulation enforced by the U.S. Department of Transportation. Violating this rule can result in substantial fines and penalties, including the suspension or revocation of your CDL.
Yes, you can add a Hazmat endorsement to your current CDL license in Missouri. You don't need to apply for a new CDL. However, you must pass the Hazardous Materials Knowledge Test, provide fingerprints for a background check, and undergo a TSA security threat assessment to get the endorsement.