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200+ Free IN CDL Combination Practice Questions

Pass your Indiana CDL Combination Vehicles Test exam on the first try — instant access, no signup required.

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A trailer service line ruptures but the emergency supply line remains charged. Which brake function is most directly affected?

A
B
C
D
to track
2026 Statistics

Key Facts: IN CDL Combination Exam

80%

Minimum CDL knowledge-test passing score

FMCSA States CDL Knowledge & Skills Test / 49 CFR Part 383

Section 6

Indiana CDL Manual section for Combination Vehicles

Indiana BMV CDL Manual

$17

Indiana commercial learner permit fee

Indiana BMV Fee Chart

$35

Indiana commercial driver license fee

Indiana BMV Fee Chart

$19

Indiana fee to add or remove a CDL endorsement

Indiana BMV Fee Chart

1 year

Indiana CLP and knowledge-exam result validity listed by BMV

Indiana BMV Obtaining a Commercial Learner Permit

Study Indiana CDL Manual Section 6 for combination-vehicle safety: rollover prevention, off-tracking and wide turns, backing, trailer skids and jackknife recovery, trailer air supply and glad hands, fifth wheel and kingpin coupling, tug and visual checks, landing gear, and combination inspection. Indiana BMV lists the Combination vehicle exam for combination-of-vehicles applicants, a $17 commercial learner permit, a $35 CDL, and one-year validity for the CLP and passed knowledge-exam results. FMCSA requires at least 80% correct on CDL knowledge tests and defines Class A combinations around 26,001 pounds or more with a towed unit over 10,000 pounds.

Sample IN CDL Combination Practice Questions

Try these sample questions to test your IN CDL Combination exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 200+ question experience with AI tutoring.

1Indiana lists which CDL knowledge exam for drivers who plan to operate a combination of vehicles?
A.Combination vehicle exam
B.Passenger transport exam
C.Tanker exam
D.Doubles/triples exam only
Explanation: Indiana BMV lists Combination of vehicles in the CLP knowledge-exam chart and pairs it with the Combination vehicle exam. Doubles/triples is separate.
2Which vehicle setup is a combination vehicle?
A.Straight truck with no trailer
B.Single bus with no trailer
C.Cargo van under 10,000 pounds
D.Truck tractor pulling a semi-trailer
Explanation: A combination vehicle has a power unit pulling one or more trailers; a tractor-semi-trailer is the common example.
3Under FMCSA Class A standards, the towed unit in a qualifying combination generally has a GVWR or GVW of more than:
A.5,000 pounds
B.8,000 pounds
C.10,000 pounds
D.15,000 pounds
Explanation: FMCSA describes Class A as a qualifying combination of 26,001 pounds or more with a towed unit over 10,000 pounds.
4What manual section is the primary study source for Combination Vehicles topics in the Indiana CDL Manual?
A.Section 2 only
B.Section 6
C.Section 4 only
D.Section 9 only
Explanation: Indiana points CDL applicants to the CDL Manual, and Section 6 is titled Combination Vehicles.
5What is off-tracking in a combination vehicle?
A.The trailer wheels follow a tighter path than the tractor during a turn
B.The tractor brakes stop working on a grade
C.The fifth wheel slides forward during travel
D.The trailer ABS lamp stays on
Explanation: Off-tracking means the trailer rear wheels track inside the tractor path in a turn.
6Why should a combination vehicle driver steer gently?
A.To keep the air compressor cooler
B.To make the fifth wheel unlock faster
C.To avoid charging the trailer reservoirs
D.To reduce crack-the-whip and rollover risk
Explanation: Sudden steering can amplify toward the rear trailer and cause rollover.
7Where should cargo be placed to reduce rollover risk in a combination vehicle?
A.As high as possible
B.Only at the rear doors
C.Low and centered
D.Only over the landing gear
Explanation: A high center of gravity increases rollover risk; cargo should be low, centered, and spread out.
8Which action best prevents rollover on ramps and curves?
A.Brake hard in the curve
B.Drive slowly before entering the curve
C.Use only the trailer hand valve
D.Shift to neutral before turning
Explanation: Rollovers often happen when turns are taken too fast, so slow before the curve or ramp.
9Why do empty or lightly loaded trailers often skid easily?
A.They have less tire traction for the available brake force
B.They have no brakes
C.They have no suspension
D.They cannot use ABS
Explanation: Light trailers have less weight on the tires, so strong brakes can lock wheels more easily.
10If a trailer starts to skid because its wheels locked during braking, what should you do first?
A.Apply only the trailer hand valve
B.Accelerate hard
C.Set the parking brakes
D.Release the brakes so the wheels can roll
Explanation: A locked-wheel trailer skid is corrected by getting off the brakes so the wheels roll again.

About the IN CDL Combination Exam

The Indiana CDL Combination Vehicles Test is the written knowledge test for drivers seeking Indiana commercial driving privileges involving combination vehicles, especially Class A tractor-trailer configurations. Indiana BMV identifies a Combination vehicle exam for applicants operating combinations and directs knowledge-test applicants to the Indiana CDL Manual. Section 6 covers safe combination driving, rollover risk, off-tracking, wide turns, railroad crossing clearance, backing, trailer skids and jackknife recovery, trailer air supply, service and emergency lines, glad hands, tractor protection valves, trailer ABS, fifth wheel and kingpin coupling, tug and visual checks, landing gear, uncoupling, and combination-vehicle inspection. FMCSA standards supply the federal CDL class framework and the 80% minimum passing rule for knowledge tests.

Assessment

Multiple-choice CDL knowledge test for applicants who plan to operate combination vehicles; Indiana CDL Manual Section 6 covers driving combinations, combination air-brake controls, ABS, coupling and uncoupling, and inspecting combinations.

Time Limit

No universal Indiana BMV time limit published for the Combination Vehicles knowledge test

Passing Score

At least 80% correct on each CDL knowledge test under FMCSA standards

Exam Fee

$17 commercial learner permit; $35 commercial driver license; $19 to add or remove a CDL endorsement (Indiana Bureau of Motor Vehicles (Indiana BMV))

IN CDL Combination Exam Content Outline

Core section

Driving Combination Vehicles Safely

Rollover risk, high center of gravity, steering response, rearward amplification, off-tracking, wide turns, low-clearance railroad crossings, backing, traffic space, and speed management.

Core section

Combination Vehicle Air Brakes

Trailer hand valve, tractor protection valve, trailer air supply control, service and emergency lines, glad hands, crossed-line faults, air leaks, trailer ABS, and trailer brake tests.

Core section

Coupling and Uncoupling

Fifth wheel plate and jaws, kingpin, trailer height, high coupling, tug test, visual inspection, air/electrical line connection, landing gear, wheel chocks, and safe release sequence.

Core section

Inspecting Combination Vehicles

Coupling area, upper and lower fifth wheel, sliding fifth wheel, landing gear, air/electrical lines, trailer frame, suspension, brakes, tires, lights, reflectors, doors, and load security.

Licensing section

Indiana CDL and FMCSA Rules

Indiana CLP requirements, required Combination vehicle exam, CLP validity, permit/license fees, Class A vehicle rules, FMCSA state resources, restrictions, ELDT context, and federal 80% knowledge-test passing standard.

How to Pass the IN CDL Combination Exam

What You Need to Know

  • Passing score: At least 80% correct on each CDL knowledge test under FMCSA standards
  • Assessment: Multiple-choice CDL knowledge test for applicants who plan to operate combination vehicles; Indiana CDL Manual Section 6 covers driving combinations, combination air-brake controls, ABS, coupling and uncoupling, and inspecting combinations.
  • Time limit: No universal Indiana BMV time limit published for the Combination Vehicles knowledge test
  • Exam fee: $17 commercial learner permit; $35 commercial driver license; $19 to add or remove a CDL endorsement

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

IN CDL Combination Study Tips from Top Performers

1Start with Indiana CDL Manual Section 6 and build a checklist for coupling, tug test, visual lock check, air/electric lines, brake tests, and landing gear.
2Memorize the function of emergency/supply and service lines, then practice crossed-line and air-leak scenarios.
3Drill off-tracking, right turns, backing, and trailer swing until you can predict the trailer wheels before they enter the turn.
4Treat rollover, jackknife, and trailer-skid questions as speed-and-traction questions: slow early, steer smoothly, keep wheels rolling, and avoid trailer-only braking.
5Separate combination knowledge from full Air Brakes and Doubles/Triples depth; study those additional manuals or sections if your Indiana CDL path requires them.
6Confirm current Indiana BMV CLP documentation, medical certificate, fees, and branch procedures before visiting a BMV branch.

Frequently Asked Questions

Who needs the Indiana CDL Combination Vehicles test?

Indiana BMV lists the Combination vehicle exam for applicants who plan to operate a combination of vehicles. It is especially relevant for Class A tractor-trailer applicants, along with General Knowledge and any required Air Brakes or endorsement tests.

What score do I need to pass?

FMCSA states that applicants must correctly answer at least 80% of the questions on CDL knowledge tests. Indiana administers CDL testing under those federal standards.

What topics are on the Indiana combination test?

Indiana CDL Manual Section 6 covers safe combination driving, rollover risk, off-tracking, low-clearance railroad crossings, backing, trailer air-brake controls, tractor protection valves, glad hands, ABS, coupling and uncoupling, fifth wheel and kingpin checks, landing gear, and inspecting combinations.

How much does Indiana CDL testing cost?

Indiana BMV fee materials list $17 for a commercial learner permit, $35 for a commercial driver license, and $19 to add or remove a CDL endorsement. The cited fee chart does not list a separate Combination Vehicles-only knowledge-test fee.

How long is an Indiana CLP valid?

Indiana BMV states that when you pass a knowledge exam, the result is valid for one year, and a CLP is valid for one year.

Is the Doubles/Triples endorsement the same as the Combination Vehicles test?

No. The Combination Vehicles test covers common combination-vehicle knowledge. Drivers required to pull double or triple trailers need the separate Doubles/triples exam and the T endorsement.