Illinois General Knowledge CDL Practice Test
The General Knowledge test is required for all CDL applicants. It covers basic commercial driving skills, vehicle inspection, safety procedures, and federal regulations. This is the foundation test that all CDL drivers must pass.
Questions
50
Passing Score
80%
Time Limit
No time limit specified
Prerequisites
Required foundation test for all CDL classes (A, B, C)
What is the General Knowledge Test?
The General Knowledge test is required for all CDL applicants. It covers basic commercial driving skills, vehicle inspection, safety procedures, and federal regulations. This is the foundation test that all CDL drivers must pass.
Required foundation test for all CDL applicants
Topic Breakdown
Vehicle Inspection
~12 questions
- Pre-trip inspection procedures
- In-cab inspection items
- Engine compartment checks
Basic Control Skills
~10 questions
- Backing and parking techniques
- Space management
- Speed and distance judgment
Safe Driving
~10 questions
- Following distance and speed management
- Night and weather driving
- Hazard awareness and response
Transporting Cargo
~8 questions
- Weight distribution and securing cargo
- Load limits and weight restrictions
- Cargo documentation
Vehicle Systems
~6 questions
- Engine systems and maintenance
- Electrical and lighting systems
- Suspension and steering systems
Regulations and Safety
~4 questions
- Hours of service regulations
- CDL requirements and restrictions
- Traffic laws and penalties
Study Tips for Illinois
- 1Memorize stopping distances at different speeds - this appears on 80% of Illinois CDL tests
- 2Master the 7-step pre-trip inspection sequence - you'll need to recite this verbatim
- 3Know weight limits: 80,000 lbs gross vehicle weight, 34,000 lbs per tandem axle
- 4Study hours of service rules thoroughly - 11 hours driving, 14 hours on duty, 10 hours off duty
- 5Focus on backing maneuvers: straight-line backing, offset backing, parallel parking
Illinois CDL Information
Age Requirements
Intrastate: 18+ · Interstate: 21+
CDL Renewal
Every 4 years
ELDT Required
Yes — ELDT (Entry-Level Driver Training) from FMCSA-registered provider
Illinois Secretary of State
Official CDL Portal →Career Opportunities
Frequently Asked Questions
The General Knowledge test is required for all CDL applicants. It covers basic commercial driving skills, vehicle inspection, safety procedures, and federal regulations.
Ready to Pass Your Illinois General Knowledge Test?
Practice with real exam questions and detailed explanations.