Based on 2022 MA CDL manual

Mistakes allowed
Passing score
Official MA Double/Triple Trailers: What to Expect
Total number of questions

Number of questions required to pass

Percentage required to pass

Massachusetts Commercial Driver's License
Massachusetts Commercial Driver's License

Do you know how to test the trailer service brakes? You will be expected to answer multiple choice questions on coupling and coupling trailers, traffic safety, proper inspection, and maintenance. If you would like to see a version of the exam before you take it, try our Free Massachusetts CDL Double/Triple Trailers Practice Test. The 20-question test requires a score of 80% to pass to ensure that you are ready for the real exam. To guide our content, we used the official Massachusetts CDL Handbook to create the questions and we included detailed descriptions of correct responses for each question. You can review your responses and find out where you need to study more.

Test your knowledge before you take the exam and ensure that you pass the endorsement exam on the first try. Take the Free Massachusetts CDL Double/Triple Trailers Practice Test and secure your new endorsement!