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📍 California CDL practice
California CDL Practice Test 2026 — Audio, Adaptive, All 9 Sections
Pass the California CDL knowledge test with free starter practice, state rules, narrated parked-study audio, and adaptive review. California requires a CLP for at least 14 days before taking the CDL skills test.
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California CDL — the essentials
Total fees
$75
CLP $38 + CDL $37
CLP hold
14 days
Minimum before skills test
Age
18/21
Intrastate / interstate
- ✓California requires a CLP for at least 14 days before taking the CDL skills test
- ✓California CDL fees: ~$75 total (CLP + CDL application)
- ✓The knowledge test can be taken in multiple languages at California DMV offices
- ✓California has special requirements for driving in mountain passes and high-wind areas
- ✓CDL holders must comply with California Air Resources Board (CARB) truck emissions rules
- ✓California has over 200,000 active CDL holders — one of the largest markets in the US
Official source: California DMV
Why California drivers choose Koydo CDL
🎧 Parked-study audio
Narrated review is framed for parked, break-time, or off-road study.
🎯 Adaptive to your weak spots
Missed questions come back until you nail them. Nothing wasted on material you already know.
📚 All 9 CDL sections
General Knowledge, Air Brakes, Combination, HazMat, Doubles/Triples, Tanker, Passenger, School Bus, Pre-Trip. Nothing locked behind a paywall tier.
✅ Free practice + Premium upgrade
Start with 15 free questions, then unlock Premium when you choose a plan.
50
states covered
9
CDL sections
Premium
paid access
Practice every CDL section
General Knowledge
50 questions · audio included
Air Brakes
25 questions · audio included
Combination Vehicles
20 questions · audio included
Hazardous Materials
30 questions · audio included
Doubles and Triples
20 questions · audio included
Tanker Vehicles
20 questions · audio included
Passenger Transport
20 questions · audio included
School Bus
20 questions · audio included
Pre-Trip Inspection
10 questions · audio included
FAQ — California CDL
What fees should I budget for California CDL?
About $75 total in state fees (CLP $38 + CDL $37). Add roughly $150 for DOT medical and ~$86 for HazMat TSA background if you want H. Koydo CDL has free starter practice and paid Premium options. Actual costs vary — confirm at California DMV.
How long must I hold a California CLP before the skills test?
14 days minimum under federal FMCSA rules. California matches the federal floor. You can continue practicing during that window.
Does Koydo CDL cover California-specific rules?
The app covers the FMCSA-standardized material that every state uses on the knowledge test — the same question types you will see on your California DMV exam. Some California-specific rules (local road classifications, commercial zones, state fuel tax) live only in the official California CDL manual; use both together.
Can I transfer my CDL to or from California?
Yes. CDL is federally standardized — once issued by any state, it transfers. You have 30 days to update your license after moving. You do not retake the knowledge test, but you may need a new DOT medical and vision screen in California.
Is the California CDL knowledge test offered in Spanish?
Some states offer the written CDL test in Spanish (TX, CA, FL, IL, AZ, NY all historically support it). Confirm with California DMV before your appointment. Koydo CDL ES mirrors the full 277-question bank in Spanish regardless of which state you test in.
CDL practice in other states
AlabamaAlaskaArizonaArkansasColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaHawaiiIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming
Ready for your California CDL?
Free practice first. Premium adds parked-study audio, adaptive review, state rules, and all 9 sections.