CDL Hazmat Exam Prep
Pass H Endorsement — DOT Tools
About
Prepare for your CDL Hazmat endorsement exam with over 1,000 practice questions covering all hazard classes, placarding, and emergency response. Features include a DOT placard guide, exam simulator with multiple modes, and offline flashcard decks for convenient study.
What's New in CDL Hazmat Exam Prep
2.4
May 23, 2026
Studying for your CDL Hazmat endorsement? We've made it easier to see everything Pro unlocks — and to start your 3-day free trial: • 510+ practice questions mapped to 49 CFR Part 172 • ERG quick lookup for any UN/NA number when you're on the road • Placard Builder + DOT Fine Calculator for real-world use • 30-question timed mock exam in the same format as the DMV test • Smart practice that targets the topics where you're weakest Plus a cleaner upgrade screen with a refreshed shield-and-diamond design so the value is obvious at a glance. Pass the endorsement. Stay compliant on the job. Drive on.
MoreSubscription plans
Monthly Access
Full access to all features. Cancel anytime.
In-App Purchases
$49.99
CDL Hazmat Prep - Lifetime Pro
Lifetime access. One payment, forever.
Developer apps
FAQ
What is the pass rate for the CDL Hazmat Exam Prep app?
The app is designed to help users pass the Hazmat endorsement exam, which requires an 80 percent score. The app's 'Pass Promise' offers an extension of access if a user meets specific criteria and still doesn't pass.
Does CDL Hazmat Exam Prep have ads?
No, CDL Hazmat Exam Prep does not contain advertisements. The app is free to download and offers a freemium model with optional in-app purchases for full access.
How does the 'Smart Practice' feature work in CDL Hazmat Exam Prep?
The 'Smart Practice' feature tracks the categories you struggle with and serves those questions more frequently. This ensures you focus your study time on areas where you need the most improvement.
What is the 'Pass Promise' in CDL Hazmat Exam Prep?
The 'Pass Promise' is a guarantee that if you complete all questions with an 80% or higher average, hold an active subscription for 3 months, and still do not pass the exam, your access will be extended by 4 months at no charge.
Can I use CDL Hazmat Exam Prep offline?
Yes, the flashcard decks and other study materials in CDL Hazmat Exam Prep work 100 percent offline. No signal is needed, making it convenient for studying anywhere.
What specific federal regulations does CDL Hazmat Exam Prep cover?
The app's practice questions are based directly on 49 CFR Parts 171 through 180, which are the federal regulations used by the FMCSA for testing.
What are the different exam modes available in CDL Hazmat Exam Prep?
The app offers five exam modes: Hazmat General Knowledge, Hazmat Operations, Emergency Response, Tanker Endorsement, and a Full H/N/X Combo. Each mode simulates exam conditions with timed questions and scoring.
What is the cost of CDL Hazmat Exam Prep?
The app is free to download and offers a 3-day free trial for its PRO version. Pricing details for subscriptions can be found within the app.