CDL Tank Vehicles

5 practice questions, split into sets of 50

Real CDL Tank Vehicles exam: 20 questions, 80% to pass

Free CDL practice test for the CDL Tank Vehicles. The CDL general knowledge test has 20 questions — work through 5 CDL practice test questions in English and Spanish to learn exactly how many questions are on the CDL test and what to expect. Administered by FMCSA with an 80% passing score requirement. Key topics include Liquid surge and handling, Baffled vs. smooth-bore tanks, Outage allowance, and more.