Wisconsin CDL practice tests

Wisconsin issues its commercial license through the Wisconsin Department of Transportation, not a stand-alone motor vehicle agency. That is worth knowing before you go looking for the right office, because in Wisconsin driver licensing sits inside the same department that runs the state's highways and freight planning, rather than under a separate DMV brand the way it does in many other states.

What Wisconsin requires

Every figure below names the document it came from, so you can check it rather than take our word for it.

Passing score
80% 49 CFR Part 383, Commercial Driver's License Standards, 383.135
Minimum age (in-state driving)
18 years old 49 CFR Part 383, Commercial Driver's License Standards, 383.71
Minimum age (across state lines)
21 years old 49 CFR Part 391, Qualifications of Drivers, 391.11
Permit holding period
14 days 49 CFR Part 383, Commercial Driver's License Standards, 383.25

Fees change without notice, so we do not repeat them here. Check Wisconsin Department of Transportation for the current cost.

Wisconsin practice tests

The knowledge tests are set by federal rule, so the questions are the same wherever you sit them. What changes is the paperwork above.

What Wisconsin does differently

The material tested is federal, not a Wisconsin invention: 49 CFR Part 383 sets the knowledge exams, the endorsements, and the 80 percent pass mark, and none of that changes at the state line. What does vary here is scale. Wisconsin is a large Midwestern state with testing sites spread from Lake Michigan in the east to the Mississippi in the west, so which office is nearest depends heavily on where in the state you actually live, in a way it would not in a small, compact jurisdiction. Check which DOT service center or third-party tester is closest before you commit to a date, rather than assuming the nearest city has one.

Wisconsin also shares a land border with three other states and a lake border with a fourth, so a freight route out of Milwaukee or Green Bay crosses a state line more often than it stays inside one. That makes the federal split between the intrastate and interstate minimum ages something Wisconsin drivers run into early, rather than a rule that only matters if a career happens to take them out of state later on.

Which tests you actually need

General knowledge applies to every applicant. From there, the vehicle sets the rest. Air brakes need their own exam, and not taking it does not block a license — it adds a restriction against driving anything fitted with them. Pulling a trailer over ten thousand pounds means the combination vehicles exam. Then come the endorsements: tank, doubles and triples, hazardous materials, passenger, school bus. Hazardous materials is the one to start earliest, because it needs a Transportation Security Administration background check that runs on its own timeline, separate from and often longer than the written exam itself.

Before you book

A commercial learner permit is required before a skills test, and federal rule sets a fourteen-day wait between the two regardless of which state issued the permit. With testing sites spread across a state this size, book your skills test appointment as soon as the permit clears rather than waiting, since a preferred office can fill up weeks out. Sit the knowledge exams as early in that fortnight as you can, so a resit still has somewhere to go.

Fees are not listed here. Wisconsin sets and changes them, and a stale figure costs you a wasted trip, so check with WisDOT directly before you travel. What this site tracks is which questions each exam draws on and where in the source material the answer sits.

Jump to a test

Every question on every one of these is free, and each answer names the handbook page it came from.

Other states

Cited to the page, every time.

Every question names the handbook, section and page it was read from, so you can check the answer instead of taking our word for it.

How we write these