CDL Exam Blog
Study tips, exam strategies, and breakdowns of the trickiest CDL Manual sections — straight from the team that builds the practice apps.
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How to Pass Your CDL on the First Try (4-Week Study Plan)
A realistic 4-week study plan to pass the CDL General Knowledge, Air Brakes and HazMat tests on your first attempt — covering daily question targets, mock-test thresholds, and what to skip.
CDL Air Brakes Explained: Every PSI Number, Test Step and Trap
A no-fluff guide to the CDL Air Brakes section. Memorise the cut-in/cut-out PSI numbers, the 7-step final check, slack adjuster rules and the questions most drivers get wrong.
HazMat Endorsement Guide: Placards, Segregation Tables, and the ERG
Everything you need to pass the HazMat endorsement (H endorsement): the 9 hazard classes, placarding rules, segregation table, shipping papers, the ERG, and the TSA background check.
The 11-Point CDL Pre-Trip Inspection (Memorise This in Order)
The complete CDL pre-trip inspection checklist in the order the examiner expects to hear it: engine compartment, in-cab, light check, walk-around, air brake check. Plus how to handle the verbal-tour format.
CDL Classes A, B, C Explained — Which Do You Need?
What's the difference between a Class A, Class B and Class C CDL? Weight limits, what each class lets you drive, required endorsements, and which class fits your career goal.
How to Use CDL Mock Tests: From 60% to 95% in 10 Days
Mock tests are the highest-leverage CDL study tool — but only if you use them right. A 10-day plan to lift your score from passing to comfortable, plus the four mistakes that flatline your progress.
Hours of Service (HOS) Rules Cheat Sheet for 2026
The current FMCSA Hours of Service rules in one cheat sheet: 11-hour driving limit, 14-hour duty window, 30-minute break, 60/70-hour rule, split-sleeper option, and the personal-conveyance exception.
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