Free CDL Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real CDL.
Diagnostics
CDL Practice Test 1
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testPractice tests
CDL Practice Test 2
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 3
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 4
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 5
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 6
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 7
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 8
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 9
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 10
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 11
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 12
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 13
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 14
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCDL Practice Test 15
10 questions · 12 min10 free CDL practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these CDL practice tests match the real exam
The real Commercial Driver's License (CDL) General Knowledge Test has 50 questions. Question types: Multiple choice, one correct answer, drawn from the FMCSA-approved question pool based on the AAMVA model CDL manual. Separate knowledge tests: General Knowledge (all applicants), Air Brakes (vehicles with air brakes) and Combination Vehicles (Class A), plus endorsement tests. In most states General Knowledge has 50 questions, Air Brakes 25 and Combination 20. Each practice test here uses the same question formats, so you get used to how CDL questions are asked before test day.
The tests draw on every CDL content area, weighted like the official outline:
- Section 1: Introduction
- Section 2: Driving Safely
- Section 3: Transporting Cargo Safely
- Section 5: Air Brakes
- Section 6: Combination Vehicles
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.