CDL Practice Tests

Doubles and Triples Test

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Question #1 of 24

Doubles and Triples Test Question Image

You should look into the back of the dolly's fifth wheel to see if it is locked around the kingpin.




CDL Practice Test (Home) | General Knowledge Test 1 (Learning)

General Knowledge Test 2 (Learning) | Air Brake Test 1 (Learning) | Air Brake Test 2 (Learning)

Combination Vehicles (Learning) | Hazardous Materials (Learning) | Doubles & Triples (Learning)

Tanker Test (Learning) | School Bus (Learning) | Passenger Vehicle (Learning)

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