Hawaii Doubles and Triples CDL Practice Test
Practice with real HI Doubles/Triples exam questions and detailed explanations. Rated 4.8 stars by 1,000+ drivers.
Written by CDL holders and exam prep experts · Updated April 2026
Free Questions
10
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
Prerequisites
Valid CDL license required - can be added to any CDL class
What is the Doubles and Triples Endorsement?
The Doubles/Triples endorsement is required to operate commercial vehicles pulling two or three trailers. This endorsement covers coupling procedures, inspection techniques, and the unique handling characteristics of multiple trailers.
State regulations vary - some states restrict or prohibit triples
Topic Breakdown
Coupling and Uncoupling
~8 questions
- Proper coupling procedures
- Air line connections
- Safety chain attachments
Inspection Procedures
~6 questions
- Multi-trailer inspection techniques
- Converter dolly checks
- Air brake system inspection
Driving Techniques
~4 questions
- Backing and turning procedures
- Space management
- Speed and following distance
Safety Considerations
~2 questions
- Rollover prevention
- Emergency procedures
Free Practice Questions
10 questionsQuestion 1 of 10
During inspection, the converter dolly air tanks drain valve should be _____ and the pintle hook should be _____.
Browse Hawaii Doubles/Triples Questions
- 1. During inspection, the converter dolly air tanks drain valve should be _____ and the pintle hook should be _____.
- 2. When pulling multiple trailers, where should the heaviest trailer be located?
- 3. What is likely to happen if the pintle hook is unlocked with the dolly still under the second trailer?
- 4. Before you can supply air to the air tanks of a second trailer you need to:
- 5. Which of these statements about the handling of doubles and triples is true?
- 6. Which of these statements about quick steering movements and doubles/triples is true?
- 7. When driving a truck with more than one trailer, which trailer should be first behind the truck?
- 8. How are the spring brakes for a converter dolly released?
- 9. Which trailer is most affected by the crack-the-whip, resulting in a rollover?
- 10. You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
Study Tips for Hawaii
- 1Master coupling and uncoupling procedures
- 2Understand the crack-the-whip effect
- 3Practice backing maneuvers mentally
- 4Know increased stopping distances
- 5Check state regulations for triples restrictions
Hawaii CDL Information
Age Requirements
Intrastate: 18+ · Interstate: 21+
CDL Renewal
Every 4 years
ELDT Required
Yes — ELDT (Entry-Level Driver Training) from FMCSA-registered provider
Hawaii County of Finance - Vehicles Division
Official CDL Portal →Career Opportunities
Frequently Asked Questions
You need this endorsement to drive commercial vehicles pulling two or three trailers, subject to state highway regulations.
Doubles/Triples Study Resources
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