The California CDL Resources tab now has a full Key Facts Digest built around the actual California Commercial Driver Handbook -- vehicle class thresholds, air brake pressure specifications, combination vehicle and coupling procedures, the 7-step vehicle inspection sequence, and endorsement codes with HazMat placarding thresholds.
What's in the tables
- CDL Vehicle Classes & Weight Thresholds -- the real GCWR and GVWR floors separating Class A, B, and C, and why California's Class C is defined by WHAT you carry (placarded HazMat, certain tank sizes) rather than weight alone.
- Air Brake System Pressure Specifications -- the governor cut-in/cut-out band, the safety relief valve's 150 psi setting, and the different pre-trip air buildup tests for single versus dual air systems.
- Combination Vehicles, Coupling & Doubles/Triples -- the 16-step coupling procedure graded individually on the skills test, and why California's doubles/triples-specific air leak test uses tighter limits than the general combination-vehicle test.
- Vehicle Inspection Sequence & Air Buildup Times -- the full 7-Step Inspection Method with the real oil-pressure and air-pressure numbers examiners check at each stage.
- Endorsement Codes & HazMat Placarding Thresholds -- the exact dual thresholds behind the N (tank) endorsement, and why Table 1 HazMat materials require placards at any quantity while Table 2 materials only do at 1,001+ pounds.
What's in the flashcard decks
- CDL Classes & Endorsements Quick Facts -- the CLP's 180-day (renewable once) validity window, and why the skills-test attempt cap is 3 TOTAL across all three segments combined, not 3 per segment.
- Air Brakes Essentials -- the exact governor, relief valve, and spring brake pressures, plus the ABS equipment dates for tractors versus trailers.
- Vehicle Inspection & Endorsement Facts -- what the ABS dash lamp should do at startup, the required emergency warning devices, and the HazMat placarding weight thresholds.
What's in the audio lessons
Three narrated lessons -- Air Brake Pressures Every CDL Driver Must Know, HazMat Endorsement: Placards, Tanks & the H/N/X Codes, and California's CDL Class System & Combination Vehicle Rules -- for reviewing the same real facts hands-free.
A few real facts worth knowing right now
- California's Class C definition triggers on WHAT you carry, not just weight -- it covers small placarded HazMat trucks and small tank vehicles well under the 26,000-lb Class B floor.
- The skills-test attempt cap is 3 TOTAL across the vehicle inspection, basic control skills, and road test segments combined -- failing each segment once already uses up all three attempts.
- California's doubles/triples-specific air leak test (2/3/5 psi per minute) is genuinely tighter than the general combination-vehicle leak test (3/4/6 psi per minute) -- don't apply the wrong figure.
- A CLP holder with an S (school bus) endorsement can never carry actual students -- only trainees, examiners, and federal or state auditors.
What's free to preview
The CDL Vehicle Classes & Weight Thresholds table and the CDL Classes & Endorsements Quick Facts flashcard deck are free to preview right now. The rest of the tables and decks -- and all three audio lessons -- are part of the same unlock as the full California CDL practice-question bank.
Where to find it
Open the California CDL track and go to its Resources tab -- the tables, flashcard decks, and audio lessons are listed there, with the free preview items clearly marked. For the exam's question count and passing score, see our California CDL Test cheat sheet.