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In Partnership with Brookings Public Library

FREE SD CDL Double/Triple Trailers Practice Test 2019

This CDL practice test is a great place to start if you’re after the SD Double/Triple Trailers endorsement. Each of the 20 questions is based on the official 2019 CDL manual. The test is designed to prepare you for the Double/Triple Trailers portion of your 2019 Commercial Driver’s License exam. There are several answer options, but only one of them is correct. Every time you answer a question, you’ll get immediate feedback with a detailed explanation, so you won’t need to wait until the end of the test to know the correct answers.

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4 mistakes allowed to pass
Passing score required at the SD DMV: 80%
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More SD CDL Resources:

  1. SD CDL General Knowledge Test
  2. SD CDL General Knowledge Test 2
  3. SD CDL General Knowledge Test 3
  4. SD CDL General Knowledge Test 4
  5. SD CDL General Knowledge Test 5
  6. SD CDL General Knowledge Test 6
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  10. SD CDL HazMat Test 2
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  15. SD CDL School Bus Test 2
  16. SD CDL School Bus Test 3
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  2. SD CDL Passenger Vehicles Test
  3. SD CDL Passenger Vehicles Test 2
  4. SD CDL Passenger Vehicles Test 3
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  8. SD CDL Air Brakes Test 2
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  15. SD CDL Combination Vehicles Test 3
  16. SD CDL Combination Vehicles Test 4
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  3. SD CDL Double/Triple Trailers Test 2
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