How we write and check questions

Questions are drafted with software help, and every one is checked against the manual section it cites. Corrections are public.

Where the facts come from

• Sections 1 to 10 of Georgia's CDL study guide, read on 2026-10-24 and again on 2026-10-27. Federal rules require each state's manual to be comparable to the national model manual, and most states print one of its editions; Georgia's web edition is the one we could read section by section. A few states print their own manual, and the state table says which.
• HazMat loading and unloading (Section 9.4) from Tennessee's CDL manual, read on 2026-10-25, and Minnesota's, read on 2026-10-27, because Georgia's web edition leaves it out.
• The Texas Commercial Rules pack from Section 14 of the Texas CDL Handbook (DL-7C, March 2026).
• The New York Metal Coil pack from New York's Driver's Manual for the Safe Securement of Metal Coils and Other Cargo (MV-79, December 2024), read on 2026-10-28.

We do not use other prep products' questions, the manuals' own review questions, or anything from a real test. State tests are confidential, and we do not have them.

The model manual that most states reprint is copyrighted by its publisher. We test the facts and rules in it, in our own words. We do not copy, host or resell any manual; the state table links to each state's free copy where we have found one.

How a question is made

1. Each manual section is drafted into a few questions in our own words, each citing its section.
2. A separate check answers every question from that section alone, without seeing our answer. If it disagrees, finds two possible answers, or cannot find the answer in the text, the question is rewritten or dropped.
3. A second review reads each question against the whole chapter, looking for wrong options that are also true somewhere else in the manual.
4. Every question is then reviewed in full. Questions with a problem are rewritten by hand and reviewed again.
5. Each wrong option gets one line saying why it is wrong. A separate review checks every line, and a second review checks every line the first one changed.
6. Reviews also flag answers that match the manual but not current federal rules. Those questions are fixed or removed.
7. A copy check flags any run of eight or more words shared with the manuals we used, and a flagged line is rewritten.

Where state manuals disagree

State manuals are on different editions, and a few facts differ between them, such as warning pressures and placard sizes. Where they disagree, our question either avoids the number or asks for the current federal rule, and the explanation says so. Where a state has its own rules, its state page says what to read.

Where we stand

• 1,447 questions in ten packs. Our own reviews (the latest on 2026-10-28), done with software help, found no wrong answer key in the questions we kept. That is not an independent check.
• No CDL instructor has checked a sample yet. When one has, we will name them here and say what they checked.
• Mistakes can still get through. Every question has a "Report a problem" link, we aim to answer within three days, and every fix goes on the corrections page.