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Free Practice Questions for California CDL Doubles and Triples Endorsement Test

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Exam Review

Key Facts: California CDL Doubles and Triples Endorsement Test Exam

20

California DMV Doubles/Triples test questions

California DMV Evaluation of CDL Written Knowledge Tests

4

Allowed errors on the DMV Doubles/Triples test

California DMV Evaluation of CDL Written Knowledge Tests

80%

Federal CDL knowledge-test passing standard

49 CFR 383.135

Knowledge only

Doubles/triples endorsement test type

California DMV Commercial Driver Handbook Section 7 and 49 CFR 383.93

California DMV Section 7 says the doubles/triples endorsement is issued by knowledge test only and that triple combinations are not legal in California. DMV evaluation materials identify the Doubles/Triples test as 20 questions with 4 allowed errors, consistent with the federal 80% CDL knowledge-test passing standard. Federal 49 CFR 383.115 requires knowledge of hookup, heaviest-trailer placement, handling, stability, traffic-operation problems, and related operating practices.

Sample California CDL Doubles and Triples Endorsement Test Practice Questions

Try these sample questions to review concepts for the California CDL Doubles and Triples Endorsement Test exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 300+ question experience with AI tutoring.

1What does the California CDL doubles/triples endorsement primarily authorize?
A.Operating CMVs pulling double or triple trailers where legal
B.Operating passenger buses
C.Transporting HazMat without screening
D.Skipping the Class A skills test
Explanation: Operating CMVs pulling double or triple trailers where legal. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
2How does California DMV issue the doubles/triples endorsement?
A.By knowledge test only
B.By a road test in doubles
C.By a cargo inspection only
D.By a HazMat background check
Explanation: By knowledge test only. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
3Which CDL endorsement code is used for double/triple trailers?
A.T
B.H
C.N
D.P
Explanation: T. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
4What does California DMV say about triple-trailer combinations in California?
A.They are not legal in California
B.They are required for Class A testing
C.They are legal only at night
D.They need no endorsement
Explanation: They are not legal in California. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
5What is a converter dolly?
A.A coupling device with one or two axles and a fifth wheel used to form doubles
B.A fuel-drain tool
C.A passenger lift
D.A steering-axle lock
Explanation: A coupling device with one or two axles and a fifth wheel used to form doubles. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
6For safest handling, where should the heavier semitrailer be placed in doubles?
A.First behind the tractor
B.In the rear position
C.On the dolly only
D.Either position with no effect
Explanation: First behind the tractor. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
7When wheeling a converter dolly into place, how should it line up?
A.In line with the rear trailer kingpin
B.Sideways to the kingpin
C.Behind the tractor axle
D.At a right angle to the trailer
Explanation: In line with the rear trailer kingpin. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
8After hooking the dolly to the front trailer, what must be done with the pintle hook?
A.Lock it
B.Leave it partly open
C.Remove it
D.Tie it with the light cord
Explanation: Lock it. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
9After coupling the dolly to the front trailer, what should be done with the converter gear support?
A.Secure it in the raised position
B.Let it drag
C.Use it as a wheel chock
D.Remove it
Explanation: Secure it in the raised position. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.
10Before backing the dolly under the rear trailer, what must be true of the rear trailer?
A.Brakes locked and/or wheels chocked
B.Brakes fully released
C.Air lines removed forever
D.Landing gear raised completely
Explanation: Brakes locked and/or wheels chocked. This matches California DMV Commercial Driver Handbook Section 7 and FMCSA doubles/triples endorsement guidance for this topic.

About the California CDL Doubles and Triples Endorsement Test Exam

The California CDL Doubles and Triples Endorsement Test is the DMV knowledge test used to add the T endorsement for double/triple trailer operations. California Commercial Driver Handbook Section 7 covers safe operation, converter dollies, coupling, uncoupling, inspections, air/electric lines, rollover, crack-the-whip effect, and emergency control. California notes that triple combinations are not legal in California, but triple-trailer material remains in the handbook because triples are legal in many other states.

Exam sponsor: California Department of Motor Vehicles under FMCSA CDL standards. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

20-question California DMV doubles/triples knowledge test covering Commercial Driver Handbook Section 7 and federal double/triple trailers endorsement knowledge areas

Time Limit

No separate official time limit published; California DMV says knowledge tests are not administered within 30 minutes of closing

Passing Score

80% federal CDL knowledge-test standard; California DMV evaluation materials list 4 allowed errors on the 20-question Doubles/Triples test

Exam / Certification Fees

$100 original Commercial Class A/B application; California DMV does not publish a separate doubles/triples-only endorsement knowledge-test fee

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

10%

Endorsement Basics and California Rules

T endorsement purpose, knowledge-test-only issuance, California triple-trailer restriction, CLP/CDL logistics, and federal Part 383 endorsement requirements.

25%

Converter Dolly and Coupling

Converter gear definition, pintle hook, dolly support, rear trailer securement, trailer height, coupling tests, safety chains, air hoses, and light cords.

15%

Uncoupling Procedures

Firm level ground, straight-line parking, parking brakes, wheel chocks, landing gear, shut-off valves, dolly line securement, dolly brakes, fifth-wheel latch release, and pintle-hook safety.

20%

Inspection and Air/Electric Systems

Fifth-wheel, kingpin, landing gear, sliding fifth wheel, shut-off valves, converter dolly drain valve, glad hands, line slack, ABS lamps, pintle-eye, and light-cord checks.

30%

Stability, Space, Speed, and Emergencies

Rollover prevention, crack-the-whip effect, rearward amplification, off-tracking, following distance, adverse conditions, mountain driving, sway response, tire failure, and cargo shift.

Preparing for the California CDL Doubles and Triples Endorsement Test Exam

What You Need to Know

  • Passing score: 80% federal CDL knowledge-test standard; California DMV evaluation materials list 4 allowed errors on the 20-question Doubles/Triples test
  • Assessment: 20-question California DMV doubles/triples knowledge test covering Commercial Driver Handbook Section 7 and federal double/triple trailers endorsement knowledge areas
  • Time limit: No separate official time limit published; California DMV says knowledge tests are not administered within 30 minutes of closing
  • Exam / certification fees: $100 original Commercial Class A/B application; California DMV does not publish a separate doubles/triples-only endorsement knowledge-test fee Official sources

Using Our Practice Resources

  • Work through all 300 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

California CDL Doubles and Triples Endorsement Test: Suggested Study Strategy

1Memorize the double-trailer coupling order from securing the rear trailer through charging trailer brakes and checking air at the rear of the second trailer.
2Drill valve positions: rear of front trailers open, rear of last trailer closed, and converter dolly air tank drain valve closed.
3Use the inspection list as a checklist for fifth wheels, kingpins, air/electric lines, landing gear, pintle hook, safety chains, and light cords.
4Treat rollover and crack-the-whip questions as smooth-control questions: slow before curves, steer gently, look far ahead, and avoid sudden braking or lane changes.
5Remember California-specific wording: triples are not legal in California, but the knowledge test covers triple-trailer concepts.

Frequently Asked Questions

Are triple trailers legal in California?

No. California DMV Section 7 says triple combinations are not legal in California, but the handbook discusses triples because they are legal in many other states.

Is there a California skills test for the doubles/triples endorsement?

No. California DMV states the endorsement is given by knowledge test only and applicants should not bring a set of doubles for a Class A skills test.

How many questions are on the California doubles/triples test?

California DMV evaluation materials identify the Doubles/Triples test as 20 questions with 4 allowed errors.

What should I study for the test?

Study California Commercial Driver Handbook Section 7, plus Sections 2, 5, and 6 as DMV directs, and understand the federal topic areas in 49 CFR 383.115.

Can a California CLP carry a doubles/triples endorsement?

Federal 49 CFR 383.93 limits CLP endorsements to Tank, Passenger, and School Bus. The doubles/triples T endorsement is a CDL endorsement after the required knowledge test.