Kentucky HazMat CDL Practice Test
Practice for your HazMat CDL exam with questions based on the official Kentucky CDL handbook
Updated: August 2026
What's on the Kentucky HazMat CDL test
Answering from memory beats re-reading — retrieval practice roughly doubles what you remember a week later. These free questions are modeled on the official HazMat CDL knowledge test.
- Questions
- 30
- To pass
- 24/30 correct (80%)
- Updated
- June 2026
- 100% free
The Kentucky CDL HazMat test follows the AAMVA standard used by most states: 30 questions, with 24 correct answers (80%) needed to pass. A CDL learner's permit in Kentucky costs $11 (Kentucky Transportation Cabinet (KTC), Division of Driver Licensing fee schedule, June 2026).
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About the HazMat Test in Kentucky
The HazMat endorsement test is required in Kentucky for drivers who transport hazardous materials. It covers placarding, labeling, loading procedures, emergency response, and compliance with federal hazmat regulations. A TSA background check is also required.
The HazMat test is part of the CDL written exam administered by the Kentucky Department of Motor Vehicles. You must pass this test along with the other required written tests to receive your Commercial Learner's Permit (CLP) in Kentucky.
Our practice questions are built from the official Kentucky CDL handbook and federal FMCSA regulations. Each question includes a detailed explanation to help you understand the material, not just memorize answers.
Kentucky HazMat endorsement facts
| Fact | Value | Source |
|---|---|---|
| NCIC background-check fee | $3Collected by the Regional Office before your written test; required by KRS 281A.300 | drive.ky.gov |
| Endorsement test fee | $5Tanker, doubles/triples, passenger, school bus and hazardous materials | wp.kentuckystatepolice.ky.gov |
| HazMat written test fee | $5Paid to the Kentucky State Police at the test; charged again at every renewal test | drive.ky.gov |
| Fingerprint-based criminal background check (KSP) | $138.25Payable to the Kentucky State Treasurer; this is NOT the endorsement fee | kentuckystatepolice.ky.gov |
| Knowledge-test retest fee | $5Combination, air-brake and endorsement tests only — the general knowledge test can be retaken indefinitely at no retest fee | wp.kentuckystatepolice.ky.gov |
| Farm Restricted Service CDL (Class B) | $15For a 60-, 120- or 180-day term | drive.ky.gov |
| Minimum age | 18 to drive within Kentucky; 21 for interstate travel | drive.ky.gov |
| Drivers aged 18–20 | Get a class-specific CDL with a “K” restriction limiting them to Kentucky intrastate commerceNo school bus and no hazardous materials | wp.kentuckystatepolice.ky.gov |
| Medical certificate submission | Your Medical Examiner submits it directly to the FMCSA National Registry II (NRII)The Division of Driver Licensing no longer accepts paper copies and the myCDL portal is discontinuedeffective June 8, 2026 | drive.ky.gov |
| Self-certification | Completed at the Regional Office, or online through a verified myDrive account at renewal | drive.ky.gov |
| Who gives the tests | The Kentucky State Police — exclusively responsible for all CDL knowledge, vision and skills testingThe Transportation Cabinet regulates everything else, so test day means two visits | kentuckystatepolice.ky.gov |
| Pass mark | 80% correct on every test | wp.kentuckystatepolice.ky.gov |
| Hazardous materials test | 30 | wp.kentuckystatepolice.ky.gov |
| Tanker test | 20 | wp.kentuckystatepolice.ky.gov |
| Oral testing | The knowledge test may be taken in written or oral form — except the hazardous materials test, which has no oral version | drive.ky.gov |
| Written-test languages | Not published for the CDL test — KSP’s 12-language written-test list is “currently for the standard operator test only” | kentuckystatepolice.ky.gov |
| Knowledge-test retakes | As many times as needed, but you must wait 24 hours between attemptsKSP adds: only once per day | drive.ky.gov |
| Booking a test | Call KSP on 800-542-5990 — press 1 for the CDL skills test, 2 for TSA hazmat fingerprinting, 3 for more information; written tests are booked with KSP’s online scheduler | kentuckystatepolice.ky.gov |
| Minimum CLP holding period | 14 days | drive.ky.gov |
| Entry-Level Driver Training | Required for a first Class A or B CDL, a Class B→A upgrade, and a first school bus, passenger or hazardous materials endorsementTheory and behind-the-wheel must be finished before a skills test can be scheduled | drive.ky.gov |
| Licensing agency | Kentucky Transportation Cabinet (KYTC), Division of Driver LicensingTesting is run by the Kentucky State Police | wp.kentuckystatepolice.ky.gov |
| First-time HazMat applicants | Fingerprint-based criminal background check and a TSA security threat assessment before you may take the endorsement test | drive.ky.gov |
| What you need before fingerprinting | A Kentucky CDL or a Kentucky CDL permit — get the CLP first if you have neither | wp.kentuckystatepolice.ky.gov |
| Booking fingerprinting | Kentucky State Police, 1 (888) 655-9655Fingerprinting is done at ten named Driver Licensing Regional Offices and satellite sites, on set weekdays | drive.ky.gov |
| HazMat ELDT | Taken after TSA approval and before you apply for the endorsement and sit the hazmat knowledge test | drive.ky.gov |
| HazMat renewal testing | Hazmat written and vision tests with KSP at every CDL renewal, unless less than two years since your last test — $5.00 | drive.ky.gov |
| Security threat assessment cycle | Every five years, with a notification letter about 60 days before it expires | drive.ky.gov |
| TWIC card as proof | A valid TWIC can stand in for the threat assessment — email a copy of both sides to kytc.twic@ky.govFirst-time hazmat applicants using a TWIC must apply in person at a Regional Office | drive.ky.gov |
| One licence only | A hazardous materials endorsement may be added to only one Commercial Driver License49 CFR 383.23(c)(3) | drive.ky.gov |
| Transferring a HazMat endorsement in | You must retest to keep it — every driver transferring into Kentucky retakes the hazmat knowledge and vision tests | wp.kentuckystatepolice.ky.gov |
| X endorsement | Tank / hazardous materials combined | drive.ky.gov |
| Farm-related services restricted CDL | Class B only, valid 60, 120 or 180 days in any 12-month period and only within 150 miles of the farm being servicedDoes not cover Class A vehicles carrying fertilizer, fuel, gasoline, pesticides or propane | drive.ky.gov |
| TSA security threat assessment fee (federal) | $85.25Non-refundable; paid to TSA, not the stateeffective January 1, 2025 | tsa.gov |
| TSA reduced fee (valid TWIC holders, where the state accepts it) | $41 | tsa.gov |
| TSA clearance validity | 5 years | tsa.gov |
| When to enroll with TSA | At least 60 days before you need the endorsementTSA says some applications take more than 45 days | tsa.gov |
How to add the HazMat endorsement in Kentucky
- Get a Commercial Learner’s Permit first if you do not already hold a Kentucky CDL — the endorsement can only be added to a Kentucky CDL or CDL permit. Source
- Call the Kentucky State Police on 1 (888) 655-9655 to book fingerprinting, and bring your CLP or licence plus one more form of ID. Source
- Pay the $138.25 fingerprint-based criminal background check fee by certified cheque, cashier’s cheque or money order payable to the Kentucky State Treasurer, or by card on the KSP site before the appointment. This is not the endorsement fee. Source
- Wait for the TSA determination — TSA notifies KYTC of approval or disqualification and the result is posted to your Kentucky driving record. A TWIC card can be submitted instead as proof of the threat assessment. Source
- Complete the hazardous-materials ELDT course, then take the 30-question hazmat written test with KSP and pay the $5.00 hazmat fee. There is no oral version of the hazmat test. Source
Official Kentucky Transportation Cabinet (KYTC), Division of Driver Licensing links
As of September 2, 2026, verified against Kentucky Transportation Cabinet (KYTC), Division of Driver Licensing.
Kentucky CDL questions
- How many questions are on the Kentucky CDL tests, and what score do you need?
- Kentucky publishes the counts in its CDL manual: general knowledge 50 questions, combination vehicles 20 (Class A), air brakes 25, and for endorsements — doubles/triples 20, tankers 20, passenger transport 20, school bus 20 and hazardous materials 30. Every test needs 80 percent correct. The general knowledge test can be retaken indefinitely with no retest fee; combination, air-brake and endorsement retakes cost $5 each. Source
- Who gives the CDL test in Kentucky?
- The Kentucky State Police — KSP is exclusively responsible for every CDL knowledge, vision and skills test, while the Transportation Cabinet handles the paperwork and issues the credential. That means two stops on test day: the Driver Licensing Regional Office for self-certification, fees and the NCIC check, then KSP for the tests, then back to the Regional Office for the card. Book the skills test on 800-542-5990 (press 1); hazmat written tests and fingerprinting appointments go through KSP too. You supply the test vehicle and bring a licensed driver qualified for it. Source
- What does Kentucky require for a hazmat (H) endorsement?
- You need a Kentucky CDL or CDL permit first, then a fingerprint-based criminal background check with the Kentucky State Police (book on 1 (888) 655-9655) costing $138.25 — that is the background check, not the endorsement. After TSA approval you complete hazmat ELDT and take the 30-question written test with KSP for a $5.00 fee; there is no oral version. The threat assessment repeats every five years with a 60-day notice, and the hazmat test is retaken at every CDL renewal unless it has been under two years. A valid TWIC card can stand in for the assessment. Source
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