Indiana Doubles and Triples CDL Practice Test
Practice with real IN 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
When driving a truck with more than one trailer, which trailer should be first behind the truck?
Browse Indiana Doubles/Triples Questions
- 1. When driving a truck with more than one trailer, which trailer should be first behind the truck?
- 2. The converter dolly air tank drain valve on coupled double/triple trailers should be:
- 3. Before you can supply air to the air tanks of a second trailer you need to:
- 4. When pulling multiple trailers, where should the heaviest trailer be located?
- 5. During inspection, the converter dolly air tanks drain valve should be _____ and the pintle hook should be _____.
- 6. To check if the converter dolly is securely coupled to the rear trailer you should:
- 7. You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
- 8. You are driving with double trailers and must use your brakes to avoid a crash. For emergency braking you should:
- 9. The purpose of a converter dolly is to:
- 10. Converter dollies:
Study Tips for Indiana
- 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
Indiana 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
Indiana BMV
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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