CDL HazMat & Tanker Test 2026

Prepare for the CDL HazMat (H), Tank Vehicle (N), and combined X endorsement knowledge tests in one focused app. Study with 500 original, source-linked questions, separate timed H and N simulations, 48 visual guides, and a personalized 7-day plan. START FREE • 50 curated practice questions • No ads • No account required • Core study content works offline FOCUSED H, N & X ENDORSEMENT PREP Study only the material you need for Hazardous Materials, Tank Vehicles, and the combined X endorsement—without unrelated CDL endorsement filler. SEPARATE TIMED PRACTICE TESTS Run a 30-question HazMat simulation or a 20-question Tanker simulation with clear time limits. See which side needs more work before test day. SOURCE-LINKED EXPLANATIONS Learn why each answer is correct with clear explanations, memory hooks, and source references based on CDL manuals and applicable federal rules. A SMART 7-DAY STUDY PLAN Start with a short diagnostic, choose a daily goal, add your exam date, and follow one focused assignment each day. Sessions cover HazMat basics, shipping papers, placarding, tanker surge, rollover control, operations, and mixed H/N review. 48 VISUAL STUDY GUIDES Memorize hazard classes, placards, markings, shipping-paper rules, tanker inspections, liquid surge, and other core concepts with visual cards and diagrams. PRACTICE YOUR WAY • Quick 10 mixed practice • Practice by topic • Review missed and saved questions • Track question mastery and bank coverage • Monitor timed simulation performance • Get a clear next-best study recommendation HAZMAT TOPICS • Hazard classes and identification • Shipping papers and emergency information • Marking, labeling, and placarding • Loading, segregation, and bulk operations • Parking, routing, incidents, security, and training TANK VEHICLE TOPICS • Tank inspection, leaks, fittings, and valves • Tank construction, outage, and density • Liquid surge and vehicle control • Curves, rollover risk, and safe speed • Loading, unloading, and emergency response MADE FOR • Drivers preparing for the combined CDL X endorsement • HazMat H endorsement applicants • Tank Vehicle N endorsement applicants • Drivers renewing or refreshing endorsement knowledge • Busy commercial drivers who prefer short, focused study sessions IMPORTANT Test formats, passing scores, wording, and administrative requirements vary by state. Use your current state CDL manual and licensing-agency requirements as the final authority. HazMat Tanker Pro is an independent study tool. It is not affiliated with FMCSA, TSA, or any state DMV or licensing agency. It does not provide ELDT certification or complete the TSA security threat assessment. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/