HazMat #2
Hazmat Test | Missouri 2025 #2 Page 3 of 5
On our website, we provide FREE practice - CDL hazmat 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 hazmat endorsement in 2025, 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 Missouri requirements for issuing a hazmat endorsement for CDL may vary from those established in other states.
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13 . If transporting chlorine, what must be in the vehicle?
If transporting chlorine in cargo tanks, a driver must have an approved gas mask in their vehicle.
14 . During a cargo fire, opening the trailer doors may actually cause the fire to expand because doing so:
When experiencing a cargo fire, it may be a bad idea to open the doors to the trailer. Doing so allows oxygen to enter the area, potentially causing the fire to flare up and expand.
15 . To transport hazardous materials, a driver needs:
To drive a vehicle of any size that is used to transport hazardous materials, you must have a CDL with a hazardous materials endorsement.
16 . The power unit of a placarded vehicle must carry a fire extinguisher with a minimum rating of:
The power unit of a placarded vehicle must be equipped with a fire extinguisher with an Underwriters Laboratories (UL) rating of 10 B:C or more.
17 . When loading hazardous materials, you should do all of the following, except:
Always set the parking brake before loading or unloading hazardous materials.When loading or unloading containers of hazardous materials, you should not use hooks, or any other tools that could damage containers or packaging. Hazardous materials should be kept away from heat sources.
18 . Who must mark and label the materials for shipping?
The shipper of hazardous materials is responsible for correctly labeling and marking them. The driver should make sure that the shipper properly labeled and marked the materials before beginning a trip.
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2025 Missouri | Frequently Asked Questions
A CDL Class B license in Missouri permits the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds. This covers vehicles like buses, dump trucks, and straight trucks. You must pass a knowledge test and skills test to obtain this license.
A Class B CDL license in Missouri allows the holder to operate single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a vehicle towing another not exceeding 10,000 pounds. This includes large buses, segmented buses, dump trucks, straight trucks, delivery trucks, and utility trucks. It does not include tractor-trailers.
To acquire a Class B CDL license in Missouri, you must be at least 18 years old (21 for interstate driving), possess a valid non-commercial driver's license, pass a vision test, and obtain a medical certificate. You'll also need to pass a written knowledge test and a skills test, which includes a pre-trip vehicle inspection, basic vehicle control, and on-road driving.
In Missouri, you must be at least 18 years old to qualify for a Class B Commercial Driver's License (CDL) for intrastate driving (within Missouri borders). However, if you plan to drive interstate (across state or country borders), you must be at least 21 years old.
Specific endorsements aren't necessary for a Class B CDL license, but they can expand your driving capabilities. Endorsements like passenger and school bus, tank vehicle, double/triple trailers, and hazardous materials can be added after passing additional written and skills tests. Each endorsement may have additional requirements. Check with your local DMV for specifics.
The Class B CDL skills assessment in Missouri includes three main parts: a pre-trip vehicle inspection to check your understanding of your vehicle and its safety, a basic vehicle control test to assess your ability to maneuver and control the vehicle, and an on-road driving test to evaluate your driving skills in various traffic situations and road conditions.
Yes, Class B CDL license holders in Missouri are limited to driving single vehicles with a gross vehicle weight rating (GVWR) of 26,001 pounds or more, or a towing vehicle not exceeding 10,000 pounds GVWR. They're also restricted from driving a Class A vehicle unless they have the appropriate endorsement. Other restrictions may apply based on endorsements and medical conditions.
Yes, it is possible. In Missouri, the written Class B CDL test can be taken in English or Spanish. However, Federal regulations require that anyone applying for a commercial driver's license must be able to read and understand English well enough to converse with the general public, understand highway signs and signals, respond to official inquiries and make entries on reports and records.
Yes, test accommodations can be requested for the Class B CDL written exam in Missouri due to disability. These may include accessibility features or alternative testing formats. It's important to make the request at the time of scheduling your exam and provide appropriate documentation to support your request. Contact your local DMV for specific procedures.
Yes, you can retake the Class B CDL written test in Missouri if you fail on your first attempt. Applicants must wait at least one day before retesting. There is a $25 retest fee for each attempt. If you fail three times, you must wait 30 days before your next attempt. It's recommended to study thoroughly to ensure success on the next try.
