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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 test your California CDL Doubles and Triples Endorsement Test exam readiness. 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?
2How does California DMV issue the doubles/triples endorsement?
3Which CDL endorsement code is used for double/triple trailers?
4What does California DMV say about triple-trailer combinations in California?
5What is a converter dolly?
6For safest handling, where should the heavier semitrailer be placed in doubles?
7When wheeling a converter dolly into place, how should it line up?
8After hooking the dolly to the front trailer, what must be done with the pintle hook?
9After coupling the dolly to the front trailer, what should be done with the converter gear support?
10Before backing the dolly under the rear trailer, what must be true of the rear trailer?
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.
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 Fee
$100 original Commercial Class A/B application; California DMV does not publish a separate doubles/triples-only endorsement knowledge-test fee (California Department of Motor Vehicles under FMCSA CDL standards)
California CDL Doubles and Triples Endorsement Test Exam Content Outline
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.
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.
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.
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.
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.
How to Pass 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 fee: $100 original Commercial Class A/B application; California DMV does not publish a separate doubles/triples-only endorsement knowledge-test fee
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
California CDL Doubles and Triples Endorsement Test Study Tips from Top Performers
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.