This is our online CDL test for a tanker endorsement for you to practice before you take the real exam at your state?s local DMV for your CDL permit. Take this CDL practice test as many times as it takes for you to get a perfect score and feel free to come back as many times as you like to try our other practice exams!


Question 1 of 12

Of the following, what best describes baffle tanks?

  • Baffle tanks are one large tank.

  • Baffle tanks are divided, but have holes for liquid to flow through controlling surge.

  • None of the above.

  • Baffle tanks are divided into smaller tanks.