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From Section 6 of the Massachusetts Commercial Driver’s License Manual

Massachusetts CDL Combination Vehicles Practice Test

Who takes it: Class A.

Tractor-trailers and trucks pulling a heavy trailer. 20 questions, 16 right to pass (80%).

Study mode

Practice Combination Vehicles

  • 10questions a round
  • 1manual section
Exam mode

Take the Combination Vehicles test

  • 20questions
  • 16correct to pass
  • –no test taken yet
Section 6 · p. 108–121 of the Massachusetts Commercial Driver’s License Manual (Version March 2025 (Rev. 1025)), opens in a new tab

A Combination Vehicles question to try

You've just dropped your trailer and are driving the tractor alone (bobtail). How should you brake?

Tap an answer to see if you’re right, and the page

Where it is in the Massachusetts Commercial Driver’s License Manual

Your score on each part fills in as you study.

  • Manual section 6
  • Combination vehiclesNot practiced yetp. 6-1 to 6-14

Massachusetts answers about this test

CDL Combination Vehicles Test guide19 rules, with the pages in each state's manual

Practice material, not the official test: check every answer in your state's current handbook. Disclaimer · How the rounds work · RMV

All Massachusetts CDL tests