Loading…
Loading…
1,000+ FMCSA-aligned questions across all 9 CDL sections. Adaptive coaching that targets your weak spots. Premium access is required before course content opens.
No credit card required · Instant access
Review every section included with CDL Premium
Built specifically for CDL applicants who need to pass on the first try
Get instant explanations for every question. Your personal CDL tutor, available 24/7.
Mastery rings for all 9 sections. Know exactly where to focus study time.
CDL exams require 80% to pass. Our adaptive system zeroes in on your weak areas.
Simulate real exam conditions. Build speed and confidence before test day.
Every question matches current FMCSA regulations and your state's testing standards.
State-specific practice for every U.S. state CDL testing requirement.
Turn your commute into study time. Our text-to-speech engine reads CDL study material aloud so you can learn hands-free. Perfect for long hauls and daily drives.
Three steps from signup to license
Start with General Knowledge. Add endorsements as you go. Track mastery per section.
Our AI pinpoints exactly which topics you miss most so you study smarter, not harder.
Walk in confident. You need 80% — our adaptive system gets you there and keeps you there.
Join 47,000+ drivers who passed their CDL knowledge test with Koydo.
Start CDL PremiumFull CDL access after purchase and disclosure acknowledgement