Getting Started
What Is the ELDT Requirement and How Does It Affect You?
The Entry-Level Driver Training rule changed how CDL applicants prepare. Here is what it means for your timeline and what Diesel Xtrem covers.
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Practical CDL guidance
Know more. Prepare smarter.
Straightforward articles for first-time applicants, retesting drivers, license upgrades and students arranging a test vehicle.
Preparation Guides
CDL Preparation Articles
Skills Test
The 5 Most Common Reasons Drivers Fail the CDL Skills Test
Pre-trip errors, backing mistakes and timing issues account for most first-attempt failures. Learn what to watch for before your DPS appointment.
Read ArticleTest-Truck Rental
Do You Need a Test-Ready Vehicle for Your DPS Appointment?
Not every driver has access to a properly equipped commercial vehicle. Here is how a test-truck rental works and what to expect on the day.
Read ArticleRetest
Failed Your CDL Skills Test? Here Is What to Do Next
A failed test is not the end. Understand the retest process, what DPS requires and how targeted preparation can help you pass on the next attempt.
Read ArticlePre-Trip
Pre-Trip Inspection: What Examiners Are Actually Looking For
The pre-trip is the first scored section of the skills test. A structured walkthrough of what examiners check and how to build a reliable routine.
Read ArticleLicense Upgrade
Upgrading from Class B to Class A: What Changes and What Stays the Same
If you already hold a Class B CDL, the upgrade path is shorter than starting from scratch — but there are specific requirements you need to meet.
Read ArticleEndorsements
Add Endorsements. Earn More.
H
HazMat
Transport hazardous materials. Unlock the highest-paying loads.
15–30% above non-endorsed positions
Full GuideL
Air Brakes
Remove the restriction. Drive any commercial vehicle.
Required for all standard CDL positions — not optional
Full GuideNot Sure Which Endorsements You Need?
Answer 5 quick questions and get a personalized recommendation based on your career goals.
Ready to Start Preparing?
Reading is a start. The next step is choosing the right program and getting behind the wheel.
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