200+ Free CDL Practice Questions
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Key Facts: CDL Exam
80%
Passing Score
40 out of 50 correct
4.8M+
CDL Holders in US
FMCSA 2024
50 Qs
General Knowledge Test
Multiple choice
ELDT
Training Required
Since Feb 2022
$10-125
Test Fee
Varies by state
60 min
Time Limit
Most states
The CDL General Knowledge test has 50 multiple-choice questions with an 80% passing score (40 correct). FMCSA's ELDT rule (effective Feb 2022) requires all new CDL applicants to complete certified training through the Training Provider Registry. Additional endorsement tests include Air Brakes (25 Qs), Hazmat (30 Qs), Combination Vehicles (20 Qs), Tanker (20 Qs), Passenger (20 Qs), and School Bus (20 Qs). Over 4.8 million CDL holders exist in the US (FMCSA 2024). Truck driving is the #1 most common occupation in 29 US states.
About the CDL Exam
The CDL General Knowledge exam is required for all commercial driver's license classes (A, B, and C). It covers vehicle inspection, safe driving, cargo management, and federal/state regulations. As of 2022, the FMCSA requires Entry-Level Driver Training (ELDT) for all new CDL applicants. The exam has 50 multiple-choice questions with an 80% passing threshold.
Questions
50 scored questions
Time Limit
60 minutes
Passing Score
80%
Exam Fee
$10-125 (State DMV / FMCSA)
CDL Exam Content Outline
Vehicle Inspection & Safety
Pre-trip/post-trip inspections, brakes, tires, lights, mirrors, emergency equipment
Vehicle Control & Operation
Basic control, gear shifting, backing, maneuvering, speed management
Safe Driving Practices
Hazard perception, space management, night/weather driving, emergency procedures
Cargo & Load Management
Cargo securement, weight limits, loading/unloading, inspection schedules
Rules & Regulations
FMCSA regulations, CDL licensing, hours of service, hazmat basics, air brake fundamentals
How to Pass the CDL Exam
What You Need to Know
- Passing score: 80%
- Exam length: 50 questions
- Time limit: 60 minutes
- Exam fee: $10-125
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
CDL Study Tips from Top Performers
Frequently Asked Questions
How many questions are on the CDL General Knowledge test?
The CDL General Knowledge test has 50 multiple-choice questions. You must score 80% (40 out of 50 correct) to pass. The test covers vehicle inspection, safe driving, cargo management, and federal/state CDL regulations. Most states allow retakes, though waiting periods vary.
What is ELDT and do I need it for a CDL?
Entry-Level Driver Training (ELDT) is required by FMCSA for anyone obtaining a Commercial Learner's Permit (CLP) on or after February 7, 2022. ELDT includes theory instruction, behind-the-wheel road training, and range/backing practice. Training must be completed through an FMCSA-registered Training Provider (TPR). Drivers with CDLs issued before this date are exempt.
What CDL endorsements are available?
CDL endorsements include: Air Brakes (removes restriction), Hazmat/H (30 Qs, requires TSA background check), Tanker/N (20 Qs), Combination Vehicles (20 Qs, Class A only), Passenger/P (20 Qs), School Bus/S (20 Qs, requires P first), and Doubles/Triples/T (20 Qs, Class A only). All require 80% to pass.
How much does a CDL cost?
CDL costs vary by state. The knowledge test fee ranges from $10-125. Total CDL costs including all tests, licensing, and fees range from $200-450. ELDT training programs range from $3,000-12,000+ for full CDL training schools, though some trucking companies offer sponsored training.
What is the CDL General Knowledge test pass rate?
CDL-specific pass rates vary by state and training program. Students from certified ELDT training schools report first-attempt pass rates of 91-97%. Self-study candidates typically score 66-74% on their first practice attempt. The 80% passing threshold means you can miss no more than 10 of 50 questions.