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CDL

Commercial Driver License Preparation

Tennessee CDL Exam Prep

Tennessee Driver Services — official Tennessee driver licensing agency. Prepare for the Tennessee CDL and Commercial Driver's License process, including the CLP permit test and state agency requirements.

Study state-specific CDL topics, requirements, and exam subjects. Choose a topic below to view lessons and preparation materials:

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Tennessee CDL study reference

Tennessee CDL requirements at a glance

Use this quick reference to understand the Tennessee application, permit, testing, and training path before opening the detailed lessons.

Minimum application age

18 years

Interstate driving age

21 years unless a future FMCSA-approved younger interstate program applies

Initial CLP validity

365 days

Wait before skills test

14 days minimum

Tennessee license / residency

—

Knowledge-test attempts

—

HazMat minimum age

21 years

CLP endorsements

P - Passenger, S - School Bus, N - Tank

Tennessee CDL license classes

A

Class A

Combination vehicles meeting the applicable federal or jurisdictional thresholds.

B

Class B

Single vehicles meeting the applicable federal or jurisdictional thresholds.

C

Class C

Applicable smaller CMVs requiring passenger or hazardous-material credentials.

Endorsements and test requirements

Code	Endorsement	Tests	ELDT
H	Hazardous Materials	Knowledge	Required
N	Tank Vehicle	Knowledge	—
P	Passenger	Knowledge + Skills	Required
S	School Bus	Knowledge + Skills	Required
T	Double/Triple Trailers	Knowledge	—
X	Tank Vehicle and Hazardous Materials	Knowledge	Required

Testing path

Vehicle inspection, basic control, and road test make up the general skills test.

Tennessee ELDT

Behind-the-wheel minimum: see state guidance.

Important note

Review the state-specific restrictions, HazMat, air-brake, and testing guidance in the lessons below.

Study reference only. Requirements can change; confirm final details with the official Tennessee licensing agency and commercial driver handbook.

Tennessee CDL Topics & Lessons

Choose a topic to view subcategories and step-by-step lessons.

13 Available Modules

Getting Your CDL

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 7 Step-by-Step Lessons • ⏱️ ~35 min study

Driving Safely

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 19 Step-by-Step Lessons • ⏱️ ~95 min study

Transporting Cargo Safely

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 4 Step-by-Step Lessons • ⏱️ ~20 min study

Air Brakes

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 6 Step-by-Step Lessons • ⏱️ ~30 min study

Combination Vehicles

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 5 Step-by-Step Lessons • ⏱️ ~25 min study

Doubles and Triples

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 4 Step-by-Step Lessons • ⏱️ ~20 min study

Tank Vehicles

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 4 Step-by-Step Lessons • ⏱️ ~20 min study

Hazardous Materials

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 9 Step-by-Step Lessons • ⏱️ ~45 min study

Passenger Vehicles

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 5 Step-by-Step Lessons • ⏱️ ~25 min study

School Bus

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 8 Step-by-Step Lessons • ⏱️ ~40 min study

Vehicle Inspection Test

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 10 Step-by-Step Lessons • ⏱️ ~50 min study

Basic Control Skills Test

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 5 Step-by-Step Lessons • ⏱️ ~25 min study

Road Test

Explore subtopics and step-by-step reading modules for Tennessee exam preparation.

📖 7 Step-by-Step Lessons • ⏱️ ~35 min study

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Class A / B CDL ELDT Training Behind-the-Wheel

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Questions and answers

Tennessee CDL frequently asked questions

Clear answers to common questions about the Tennessee CDL application, commercial learner permit, endorsements, and exam preparation.

What is the minimum age for a CDL in Tennessee?+

The minimum CDL application age listed in the Tennessee study database is 18 years. Drivers operating across state lines generally must meet the federal interstate age requirement.

How long is a commercial learner permit valid in Tennessee?+

The initial commercial learner permit validity listed for Tennessee is 365 days. Check the current state handbook before applying.

How long must I wait before taking the CDL skills test in Tennessee?+

The Tennessee CDL study database lists a minimum wait of 14 days minimum after initial CLP issuance before skills testing.

What CDL endorsements are available in Tennessee?+

The Tennessee database includes the following endorsement codes: P - Passenger, S - School Bus, N - Tank. Each endorsement may have separate knowledge, skills, ELDT, or background-check requirements.

What should I study for the Tennessee CDL exam?+

Start with the Tennessee CDL topics and lessons below, then review the available practice tests for general knowledge, air brakes, combination vehicles, endorsements, and other exam subjects listed on this page.

Which agency handles CDL licensing in Tennessee?+

Commercial Driver's License and Commercial Learner's Permit services in Tennessee are handled through the Tennessee Department of Safety and Homeland Security — Driver Services. Use the current Tennessee Driver Services CDL guidance and the official state handbook to confirm application and testing details.

Timed Simulator

Tennessee Practice Tests

TN General Knowledge Practice

50 Qs • 60 Mins • 80.0% Pass

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TN Air Brakes Practice

25 Qs • 60 Mins • 80.0% Pass

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TN Hazardous Materials Practice

25 Qs • 60 Mins • 80.0% Pass

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TN Combination Vehicles Practice

20 Qs • 60 Mins • 80.0% Pass

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TN Doubles and Triples Practice

20 Qs • 60 Mins • 80.0% Pass

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TN Tank Vehicles Practice

20 Qs • 60 Mins • 80.0% Pass

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TN Passenger Practice

20 Qs • 60 Mins • 80.0% Pass

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TN School Bus Practice

20 Qs • 60 Mins • 80.0% Pass

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