200+ Free Missouri CDL Hazmat Practice Questions
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Key Facts: Missouri CDL Hazmat Exam
80%
Minimum CDL knowledge-test passing score
49 CFR 383.135
MSHP
Missouri CDL written examination station authority
Missouri DOR Commercial Drivers page
ELDT
Required before first-time H endorsement knowledge test
Missouri DOR Entry-Level Driver Training FAQs and FMCSA
TSA
Threat assessment required for HME applicants, renewals, and transfers
Missouri DOR HazMat page and TSA
5 years
Maximum Missouri H/X CDL term after threat assessment date
Missouri DOR HazMat endorsement requirements
$85.25
TSA new and renewing HME applicant fee effective January 1, 2025
Transportation Security Administration
Missouri drivers need an H endorsement, or X for combined tank and hazmat authority, to haul hazardous materials in placarded quantities. Missouri DOR requires the HazMat written test at an MSHP examination station plus TSA security threat assessment approval before adding H or X, and it requires HazMat written testing at each endorsement renewal. First-time H endorsement applicants must complete FMCSA ELDT before the knowledge test. Federal CDL rules require at least 80% correct on knowledge tests.
Sample Missouri CDL Hazmat Practice Questions
Try these sample questions to test your Missouri CDL Hazmat exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 200+ question experience with AI tutoring.
1Which CDL endorsement authorizes a Missouri driver to haul placarded hazardous materials?
2Which CDL endorsement combines tank vehicle and hazardous materials authority?
3Which Missouri agency administers CDL written exams such as the HazMat knowledge test?
4Which federal agency conducts the HME security threat assessment for Missouri H or X applicants?
5What training must a first-time H endorsement applicant complete before the H knowledge test?
6What is the federal minimum passing score for CDL knowledge tests?
7What is the main purpose of a hazmat placard?
8Where should hazmat shipping papers be when the driver is away from the cab controls?
9Which item belongs in the basic hazmat shipping description?
10What does Hazard Class 1 cover?
About the Missouri CDL Hazmat Exam
The Missouri CDL Hazardous Materials Endorsement Test is the written knowledge exam for drivers who need an H endorsement, or an X endorsement when combined with tank vehicle authority, to transport hazardous materials or hazardous waste in amounts requiring placards. Missouri DOR says an H or X endorsement requires the HazMat written test at a Missouri State Highway Patrol examination station and TSA security threat assessment approval before the endorsement is added. New and renewal applicants must complete TSA application and fingerprint collection, and Missouri states the CDL with H or X endorsement expires no more than five years after the threat assessment date. First-time hazardous materials endorsement applicants must complete FMCSA Entry-Level Driver Training before appearing for the H knowledge test. Operational content comes from Missouri CDL Manual Section 9 and federal hazardous materials rules for shipping papers, emergency response information, placards, markings, labels, hazard classes, segregation, loading, unloading, routing, parking, and security awareness.
Assessment
Multiple-choice Missouri HazMat written knowledge test covering hazardous materials communication, placards, markings, labels, hazard classes, loading and unloading, segregation, emergencies, security awareness, routing, parking, and endorsement rules.
Time Limit
Missouri DOR and FMCSA do not publish a separate public time limit for the HazMat knowledge test
Passing Score
At least 80% correct on CDL knowledge tests under 49 CFR 383.135
Exam Fee
$19 Missouri commercial learner's permit; $22.50 CDL for 0-3 years or $45 CDL for 0-6 years; CDL knowledge and skills test fees are not included in Missouri DOR permit/license fees; TSA HME threat assessment fee paid separately (Missouri Department of Revenue (DOR) and Missouri State Highway Patrol (MSHP) under FMCSA, TSA, and DOT hazardous materials rules)
Missouri CDL Hazmat Exam Content Outline
Shipping Papers and Emergency Information
Basic description order, UN/NA identification numbers, proper shipping names, hazard classes, packing groups, reportable quantities, technical names, emergency phone numbers, and required paper location.
Placards, Markings, and Labels
Table 1 and Table 2 placarding, four-side display, DANGEROUS placard limits, package labels, subsidiary hazards, orientation arrows, and bulk package markings.
Hazard Classes and Identification
Classes 1-9, divisions for gases and explosives, flammable liquids and solids, oxidizers, organic peroxides, toxic and infectious substances, radioactive materials, corrosives, and Class 9 materials.
Loading, Unloading, and Segregation
Package inspection, securement, cargo tank attendance, smoking and engine restrictions, incompatible materials, foodstuff protection, and segregation table symbols.
Emergency Response and Communication
Leaks, spills, fires, tire overheating, warning devices, uphill/upwind approach, emergency response information, ERG use, and communication with responders.
Security, Routing, Parking, and Missouri Context
Security awareness, suspicious activity, security plans, route restrictions, parking and attendance, Missouri H/X endorsement renewal rules, TSA HME threat assessment, and first-time H endorsement ELDT.
How to Pass the Missouri CDL Hazmat Exam
What You Need to Know
- Passing score: At least 80% correct on CDL knowledge tests under 49 CFR 383.135
- Assessment: Multiple-choice Missouri HazMat written knowledge test covering hazardous materials communication, placards, markings, labels, hazard classes, loading and unloading, segregation, emergencies, security awareness, routing, parking, and endorsement rules.
- Time limit: Missouri DOR and FMCSA do not publish a separate public time limit for the HazMat knowledge test
- Exam fee: $19 Missouri commercial learner's permit; $22.50 CDL for 0-3 years or $45 CDL for 0-6 years; CDL knowledge and skills test fees are not included in Missouri DOR permit/license fees; TSA HME threat assessment fee paid separately
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
Missouri CDL Hazmat Study Tips from Top Performers
Frequently Asked Questions
Who administers the Missouri CDL HazMat written test?
Missouri DOR publishes CDL licensing requirements and forms, while Missouri State Highway Patrol driver examination stations administer CDL written examinations such as the HazMat knowledge test.
What score do I need to pass the Missouri HazMat knowledge test?
Federal CDL rules require at least 80% correct on each CDL knowledge test under 49 CFR 383.135.
Do I need a TSA background check for a Missouri H or X endorsement?
Yes. Missouri DOR says an H or X endorsement will not be added until the driver completes the HazMat written test and TSA approves the security threat assessment.
Do I need ELDT before the Missouri HazMat test?
Yes, if you are a first-time hazardous materials endorsement applicant. Missouri DOR states ELDT must be completed before appearing at an MSHP driver examination station for the H knowledge test.
Do I retake the HazMat written test when renewing in Missouri?
Yes. Missouri DOR HazMat FAQs state drivers must pass the HazMat written test every time they renew an H or X endorsement.
How long is a Missouri H or X endorsement tied to the TSA assessment?
Missouri DOR states a CDL with H or X endorsement expires no more than five years after the date the security threat assessment was completed.