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Test 3
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Tennessee CDL Doubles and Triples Practice Test 3

Tennessee CDL Doubles and Triples Practice Test 3. This third Tennessee CDL Doubles and Triples practice test reinforces converter dollies, coupling order, air lines, emergency brakes, inspections, stability, following distance, curves, lane changes, sway, rearward amplification, uncoupling, safe parking, weight distribution, and professional control. It consists of 20 questions, with 5 questions per page, and you must answer at least 16 correctly to pass. Use this practice test to continue building the foundation for the Doubles/Triples endorsement before moving into more advanced tests. Depending on your license class and endorsements, Tennessee may also require tests for General Knowledge, Combination Vehicles, Air Brakes, Tank Vehicles, Hazmat, Passenger, and School Bus.

Questions on this page
5
Exam questions
20
Correct to pass
16
Passing score
80%
Page
1 / 4

Page 1 — 5 practice questions

CDL Doubles/Triples

Instructions

  • Select the best answer for each question.
  • Read every option carefully before choosing.
  • Complete all 5 questions on this page before moving on. Your answers stay saved when you refresh or move between pages.

Quick snapshot

  • Topic: CDL Doubles/Triples Practice Test 3
  • Focus: dollies, coupling, air lines, stability, curves, and safe control
  • Passing target: 16 of 20 • Page 1 of 4
1
Coupling check

After coupling a converter dolly, what should you do before driving away?

Question 1
2
Air line routing

Why must air and electrical lines have enough slack but not drag?

Question 2
3
Emergency line

What does the trailer emergency air line do?

Question 3
4
Service line

What does the trailer service air line do?

Question 4
5
Dolly position

Why must the converter dolly be lined up correctly before coupling?

Question 5
You must answer every question on this page before continuing.
Page 1 of 4