Colorado CDL manual and tests
Colorado publishes the AAMVA model CDL manual with its own cover, so CDL Coach's questions match it section for section.
The manual
June 2023, DR 2251 (06/15/23); AAMVA 2019 CDL Testing System · 156 pages · the agency's page
| Section | Title | Starts on |
|---|---|---|
| 1 | Introduction | p. 6 |
| 2 | Driving Safely | p. 16 |
| 3 | Transporting Cargo Safely | p. 56 |
| 4 | Transporting Passengers Safely | p. 59 |
| 5 | Air Brakes | p. 62 |
| 6 | Combination Vehicles | p. 71 |
| 7 | Doubles and Triples | p. 84 |
| 8 | Tank Vehicles | p. 88 |
| 9 | Hazardous Materials | p. 90 |
| 10 | School Buses | p. 108 |
| 11 | Vehicle Inspection | p. 119 |
| 12 | Basic Control Skills | p. 127 |
| 13 | On-road Driving | p. 130 |
What you can practise
- General Knowledge50 questions on the test, 80% to pass · 180 practice questions
- Air Brakes25 questions on the test, 80% to pass · 40 practice questions
- Combination Vehicles20 questions on the test, 80% to pass · 35 practice questions
- Passenger20 questions on the test, 80% to pass · 25 practice questions
- School Bus20 questions on the test, 80% to pass · 35 practice questions
- Tank Vehicles20 questions on the test, 80% to pass · 25 practice questions
- Hazardous Materials30 questions on the test, 80% to pass · 50 practice questions
- Doubles and Triples20 questions on the test, 80% to pass · 30 practice questions
Counts are the AAMVA practice format. Colorado's test may differ; the pass mark is 80% almost everywhere.