Georgia CDL Test Questions 2026: What the Knowledge Tests Cover
What to expect on Georgia CDL knowledge tests in 2026: the official 80% passing score, General Knowledge, Air Brakes, Combination Vehicles, endorsements, retest timing, and how to study.
Georgia DDS publishes the subjects you must know and the passing standard for CDL knowledge testing. What current official DDS sources do not clearly publish is a fixed statewide question count for every test version. Rather than repeat third-party numbers as fact, this guide focuses on what DDS and the Georgia Commercial Driver's Manual actually confirm.
What Georgia DDS officially confirms
- CDL knowledge tests are based on the current Georgia Commercial Driver's Manual and the requirements for the license class or endorsement.
- DDS publishes an 80% passing score for CDL knowledge tests.
- A failed CDL knowledge test requires at least a two-day wait before retesting.
- The tests you need depend on the class of CDL, braking system, vehicle combination, and endorsements you want.
General Knowledge
General Knowledge is the foundation for commercial driving. Study vehicle inspection, basic control, safe driving practices, seeing hazards, communicating, speed and space management, railroad crossings, emergencies, cargo fundamentals, driver fitness, and the other core subjects in the Georgia manual. Do not prepare by memorizing isolated answer letters; the same rule can be tested through different scenarios.
Air Brakes
If you need to operate a commercial vehicle equipped with air brakes without an air-brake restriction, study the air-brake sections carefully. You should understand system components, pressure and warning devices, spring brakes, dual systems, inspection procedures, stopping distance, brake fade, and safe braking technique.
Combination Vehicles
Class A applicants should study the combination-vehicle material covering coupling and uncoupling, fifth wheels, trailer air and electrical connections, combination inspections, preventing rollovers and jackknifes, braking, backing, and the handling differences created by a tractor-trailer combination.
Endorsement tests
Passenger, school bus, tanker, doubles/triples, and hazardous-materials operations each add specialized knowledge requirements. ELDT also applies to first-time passenger, school bus, and hazardous-materials endorsements, with the hazardous-materials theory requirement completed before that endorsement knowledge test.
Why we are not publishing an 'exact question count'
The previous FastLessonHub description promised exact current question counts. During this remediation, the official Georgia sources we verified clearly supported the 80% passing standard and required subject areas but did not provide a reliable current item count for every exam on the public DDS pages reviewed. Publishing an unsupported number would make the page look precise while making it less trustworthy.
A better study method
- Read the matching chapters of the current Georgia Commercial Driver's Manual.
- Use practice questions to expose weak topics, not to memorize a sequence.
- For every missed question, return to the manual rule and explain why the correct answer is correct.
- Keep practicing until you can score comfortably above 80% across fresh question sets.
- Review air-brake inspection and combination-vehicle procedures as systems, because later skills testing depends on the same understanding.
If you fail
Use the two-day minimum retest wait to fix the specific knowledge gaps that caused the failure. Remember that Georgia's CAP structure covers up to four knowledge-test attempts under its current rules, but failed attempts can still add $10 testing charges. Rebooking without changing your preparation is usually the most expensive study strategy.
Official sources checked
Last reviewed October 5, 2026. FastLessonHub checked the current official sources below before publishing this guide. Rules, fees, testing sites, and program approvals can change, so re-check the relevant agency before paying a fee or traveling to an appointment.
- Georgia Department of Driver Services — online Georgia Commercial Driver's Manual, CDL Permit, and testing information (dds.georgia.gov).
- Federal Motor Carrier Safety Administration — ELDT requirements for first-time Class A/Class B and P, S, and H endorsements (www.fmcsa.dot.gov).