California commercial driver handbook: what to study, what changed
California's CDL handbook is still the study text for every commercial knowledge test. But the edition DMV links today was written before several rules that now decide how you train, test, and log your hours.
The California CDL path in numbers
The California commercial driver handbook is DMV form DL 650, free as a PDF. The edition DMV links today is marked Rev. 12/2019, with a January 2023 supplement for the modernized skills test. Study the sections your class needs, then check the newer rules on training, medical certificates, and intrastate logs.
People search for the California CDL handbook expecting a current study guide. It is still the right book for the knowledge tests, and its first section holds most of the California-only rules a commercial driver must know.
What it can't show is what changed after it was printed. This guide covers both: how to use the handbook, and the 2024 to 2026 changes that now matter just as much.
The full briefing, read aloud
7 chapters. Select one to jump to it.
Generated with AI text-to-speech from this article's key insights, in order, rather than reading it word for word. Chapter times come from a transcript of the audio. The article itself was written and reviewed by the Simplex Group team.
Key takeaways
Use DL 650 plus the 2023 supplement
The handbook DMV links is marked Rev. 12/2019. The January 2023 supplement (DL 650 X) covers the modernized skills test.
Study by license class
Figure 1.2 in the handbook lists the sections each class and endorsement needs. Section 1 holds the California rules.
California logs run on state limits
Intrastate truck drivers may drive 12 hours after 10 off, never after the 16th hour on duty, and stop at 80 hours in 8 days.
Intrastate drivers need ELDs too
Since January 1, 2024, CHP requires intrastate carriers and drivers to keep logs on an ELD unless an exemption applies.
Training adds a state minimum
Class A and B applicants need federal entry-level training plus at least 15 hours behind the wheel, 10 of them on public roads.
In this articleContents
Where do you get the California commercial driver handbook?
Download it free from the California DMV handbooks page. The California Commercial Driver Handbook is form DL 650. Its cover reads 2019–2021, and the back cover is marked Rev. 12/2019.
Download the January 2023 supplement (DL 650 X) too. It replaces the skills test chapters with the modernized version: the vehicle inspection in Section 11M, and basic control and the road test in Section 12M.
DMV also links a Spanish handbook and a Spanish supplement. Whatever you read, the skills test is given in English only, with no interpreter.
What is in the California CDL handbook?
The California CDL handbook has 13 numbered sections, and Figure 1.2 tells you which ones your license class and endorsements need. Not sure which class you need? Start with our guide to CDL vs non-CDL requirements.
| License or endorsement | Sections to study |
|---|---|
| Class A | 1, 2, 3, 6, 11, 12, 13 |
| Class B or C | 1, 2, 3, 11, 12, 13 |
| Air brakes (any class) | Add 5 |
| Hazardous materials (H) | 9 |
| Tank vehicle (N) | 2, 6, 8, 9 |
| Doubles and triples (T) | 2, 5, 6, 7 |
| Passenger (P) | 2, 4, 11, 12, 13 |
| School bus (S) | 10, 11, 12, 13 |
Section 1 is the California part
Most chapters follow the national model every state uses. Section 1 is where California's own rules live, and every class studies it. Some of what it covers:
- License classes. Commercial Class A, B, and C, plus noncommercial Class A and B licenses for heavy travel trailers and long motorhomes.
- California endorsements. X for tank vehicles hauling placarded hazmat, and an optional F for firefighting equipment. Triple trailers are not legal in California.
- Speed and lanes. 55 mph for trucks with three or more axles and any vehicle towing another, and the right-lane rule.
- Size limits. 14 feet high, 102 inches wide, and 65 feet for a tractor and trailer, with exceptions.
- Carrier rules. The DMV motor carrier permit, insurance filings, state hours of service, and an SR 1 report to DMV within 10 days of a crash with injury or more than $1,000 in damage.
Section 1 also covers California's air-quality rules and what IRP and IFTA records a driver keeps. For the permit itself, see our California motor carrier permit service.
What are California's commercial driver log book rules?
California's log book rules depend on the freight, not the truck. Drivers in intrastate commerce follow California's hours of service in Title 13 of the California Code of Regulations. Drivers in interstate commerce, and any driver hauling hazardous substances or waste, follow the federal rules.
| Limit | California intrastate | Federal interstate |
|---|---|---|
| Driving | 12 hours after 10 off | 11 hours after 10 off |
| Driving window | None after the 16th hour on duty | None after the 14th hour on duty |
| Weekly cap | 80 hours in 8 days | 60 in 7 or 70 in 8 days |
| Restart | 34 hours off | 34 hours off |
One California exception the handbook's table leaves out: a driver of a tank vehicle over 500 gallons hauling flammable liquid may drive only 10 hours. Farm-product, oilfield, and other exceptions are in 13 CCR 1212.
Do intrastate drivers need an ELD?
Yes, since January 1, 2024. The handbook predates this. CHP requires intrastate carriers and drivers to record duty status on an ELD that meets the federal standard, while still using California's hours.
A paper log is still allowed for drivers who log no more than 8 days in any 30, driveaway-towaway moves, and trucks built before model year 2000. Drivers who stay within 100 air miles and are released within 12 hours keep no log at all, if the carrier keeps their time records for six months. Our guide to electronic logging devices covers the device side.
What changed for California CDL applicants since the handbook?
Several rules changed after the handbook was printed, and DMV's commercial driver license page is where they appear first.
- Training before testing. First-time Class A or B applicants, Class B to A upgrades, and new H, P, or S endorsements need federal entry-level driver training. California adds at least 15 hours behind the wheel for Class A or B, 10 on public roads, certified on form DL 1236.
- Electronic medical certificates. Since July 27, 2026, DMV receives interstate (NI) drivers' medical results from the examiner through FMCSA's National Registry; drivers can no longer submit them. Intrastate (NA) drivers may still submit paper forms.
- Clearinghouse checks. Since November 18, 2024, DMV will not issue, renew, or upgrade a CLP or CDL for a driver with a prohibited status, and it removes commercial privileges until return-to-duty is complete.
- Non-domiciled licenses paused. Following an FMCSA directive, DMV is not issuing or renewing CLPs or CDLs for applicants with limited-term legal presence.
Our entry-level driver training guide covers who needs the federal training and where to find a registered provider.
How do you get a CDL in California?
You get a California CDL in two stages: a commercial learner's permit (CLP) from the knowledge tests, then a skills test at least 14 days later.
Step 1: Apply and pass the knowledge tests
You need a California Class C license first. Apply online, make sure your medical certification reaches DMV, and bring identity and residency documents, and a 10-year license history (DL 939) if you were licensed in another state. The fee and application stay valid for 12 months, and you get three attempts at each knowledge test.
Step 2: Hold the CLP and train
A CLP lets you drive a commercial vehicle only with a CDL holder of the right class beside you. It lasts 180 days and can be renewed once, as long as it ends within a year of your application. Finish your training during this window.
Step 3: Pass the three-part skills test
Bring a vehicle that matches the class you want, then pass the vehicle inspection, basic control skills, and road test, in English. Failing one part postpones the rest, and you get three tries in total. DMV then issues an interim CDL valid for 60 days.
For carriers, the license is the start. You still need a complete driver qualification file before the new driver's first load.
How Simplex helps California carriers with new CDL drivers
The license belongs to the driver. The permits, logs, and driver files belong to the carrier, and we help with all three.
DOT compliance in California
Our California DOT compliance team helps carriers meet federal and state rules, from the CA number to state hours of service and ELDs.
Motor carrier permits
We handle the California motor carrier permit, from the CA number to the application and every renewal.
Driver qualification files
Our driver qualification file team works with you and your drivers to keep every file compliant and audit-ready.
Frequently asked questions
Is there a 2026 California CDL handbook?+
What are the log book rules for California intrastate truck drivers?+
Is the California commercial driver handbook available in Spanish?+
Do I need training before the California CDL skills test?+
Can I take the CDL test in California with an out-of-state license?+
Where this information comes from
The requirements below come from the California DMV, the California Highway Patrol, California law, and federal regulations, checked on October 20, 2026.
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1
California DMV — California Commercial Driver Handbook (DL 650)
Edition, Figure 1.2 study map, Section 1 California rules, endorsements, size and speed limits, CLP and test rules.
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2
California DMV — Commercial Driver's License Handbook Supplement (DL 650 X)
January 2023 supplement with the modernized vehicle inspection, basic control, and road test sections.
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3
California DMV — Commercial Driver's Licenses
Application steps, CLP rules, skills test, ELDT and DL 1236, electronic medicals, Clearinghouse, non-domiciled pause.
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4
California Code of Regulations — 13 CCR 1212.5
Intrastate driving and on-duty limits, including the 10-hour flammable-liquid tank rule.
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5
California Highway Patrol — Intrastate Electronic Logging Devices
ELDs for intrastate drivers from January 1, 2024, the exemptions, and the 100 air-mile rule.
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6
California Vehicle Code — Section 15250.1
The 15-hour behind-the-wheel minimum for Class A and B applicants, 10 hours on public roads.
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7
eCFR — 49 CFR 383.25
Federal CLP rules: supervision, allowed endorsements, and the 14-day wait before the skills test.
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8
eCFR — 49 CFR 395.3
Federal hours-of-service limits for property-carrying drivers.
Written by
Simplex Group
Permits & Fuel Tax Team, Simplex Group
Reviewed for technical accuracy by a Simplex permitting manager before publication. Simplex has registered and filed permits and fuel taxes for interstate carriers across all 50 states for more than 20 years.
Published · Updated
Related articles and services
Study the handbook, then check what changed
The handbook still teaches what the knowledge tests ask. Training, medical, and logging rules have moved on since it was printed, and those decide whether a new driver can work.
If you are adding new CDL drivers to a California fleet and want their files, permits, and logs right from day one, talk to our team.