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200+ Free Colorado CDL Combination Vehicles Practice Questions

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Key Facts: Colorado CDL Combination Vehicles Exam

80%

Minimum CDL knowledge-test passing score

49 CFR Section 383.135

Section 6

Colorado CDL Manual Combination Vehicles section

Colorado Commercial Driver License Manual DR 2251

$19.00

Colorado CDL instruction permit fee

Colorado DMV State Fees

$17.50

Colorado Commercial Driver License fee

Colorado DMV State Fees

3 areas

Federal combination knowledge areas: coupling, inspection, operating practices

49 CFR Section 383.111

Group A

Not issued if combination portion is failed

49 CFR Section 383.135

Colorado applicants who want to drive combination vehicles must pass the Combination Vehicles knowledge test. The official Colorado CDL manual identifies this test as required for combination vehicles and Section 6 as the study source. Federal rules require combination drivers to know coupling/uncoupling, unique combination inspections, and general operating practices including air brakes; 49 CFR 383.135 requires at least 80% correct and bars issuance of a Group A CLP or CDL when the combination portion is failed.

Sample Colorado CDL Combination Vehicles Practice Questions

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

1In Colorado CDL testing, which knowledge test is required if you want to drive combination vehicles?
A.Passenger Transport Test
B.Combination Vehicles Test
C.Hazardous Materials Test
D.Tank Vehicle Test
Explanation: The Colorado Commercial Driver License Manual states that the Combination Vehicles Test is required if you want to drive combination vehicles.
2Under FMCSA Class A rules, a combination generally requires a Class A CDL when the GCWR is 26,001 pounds or more and the towed unit is over what rating?
A.5,000 pounds
B.10,000 pounds
C.16,000 pounds
D.26,001 pounds
Explanation: FMCSA describes Class A as a combination of 26,001 pounds or more inclusive of a towed unit over 10,000 pounds GVWR or GVW.
3What minimum score does federal CDL regulation require on each CDL knowledge test, including combination vehicles?
A.60 percent
B.70 percent
C.80 percent
D.90 percent
Explanation: 49 CFR 383.135 requires at least 80 percent correct on each CDL knowledge test.
4What happens under 49 CFR 383.135 if an applicant fails the combination vehicle portion of the knowledge test?
A.The applicant may still receive an unrestricted Group A CLP
B.The applicant must not be issued a Group A CLP or CDL
C.Only a hazmat endorsement is delayed
D.The applicant receives a passenger-only restriction
Explanation: Federal regulation says an applicant scoring below 80 percent on the combination vehicle portion must not be issued a Group A CLP or CDL.
5Which Colorado DMV fee is listed for a Commercial Driver License instruction permit?
A.$11.50
B.$17.50
C.$19.00
D.$34.00
Explanation: Colorado DMV lists the Commercial Driver License instruction permit fee as $19.00.
6Colorado DMV states the CDL Knowledge Test is available in which languages?
A.English only
B.English and Spanish
C.English, Spanish, and French
D.Any language with an interpreter
Explanation: Colorado DMV states that the CDL Knowledge Test is available in English and Spanish.
7FMCSA test-method rules require state CDL knowledge tests to be based on what source?
A.Competitor practice-test websites
B.A pre-approved FMCSA question pool comparable to AAMVA CDL test system materials
C.Only questions written by each local testing office
D.Employer training handouts
Explanation: 49 CFR 383.133 requires states to use an FMCSA pre-approved pool of questions comparable to AAMVA CDL test system materials.
8Which three areas does 49 CFR 383.111 specifically require combination-vehicle drivers to know?
A.Hazmat placarding, school bus loading, and passenger management
B.Coupling and uncoupling, combination vehicle inspection, and general operating practices including air brakes
C.Motorcycle balance, helmet law, and lane splitting
D.Dispatcher procedures, payroll, and fuel-tax filing
Explanation: Part 383.111 lists coupling and uncoupling, unique combination vehicle inspection, and general operating practices including safe operation and air brakes.
9Which vehicle restriction can result from taking a Class A skills test in a non-fifth-wheel combination?
A.O restriction limiting Class A fifth-wheel tractor-trailer operation
B.H hazmat endorsement
C.P passenger endorsement
D.N tank endorsement
Explanation: Colorado and FMCSA materials describe an O restriction when a Class A skills test is taken in a combination vehicle that is not a fifth-wheel tractor-semitrailer combination.
10Which topic mix best matches Colorado CDL Manual Section 6 for Combination Vehicles?
A.Driving combinations, combination air brakes and ABS, coupling and uncoupling, and inspecting combinations
B.Only passenger loading and fare collection
C.Only hazmat placards and shipping papers
D.Only motorcycle balance and cornering
Explanation: Colorado CDL Manual Section 6 covers driving combinations, combination vehicle air brakes and ABS, coupling and uncoupling, and inspecting combinations.

About the Colorado CDL Combination Vehicles Exam

The Colorado CDL Combination Vehicles test covers the knowledge needed to operate tractor-trailers and other combination vehicles safely. It is based on Section 6 of the Colorado Commercial Driver License Manual and FMCSA Part 383 requirements for combination drivers, including coupling and uncoupling, fifth wheel and kingpin inspection, air and electrical connections, trailer brake operation, landing gear, combination pre-trip inspection, off-tracking, safe turns, backing, rollover prevention, trailer skids, jackknife recovery, following distance, and Colorado/FMCSA CDL basics.

Assessment

Multiple-choice CDL knowledge test. Colorado CDL Manual Section 6 covers driving combinations, combination vehicle air brakes and ABS, coupling and uncoupling, and inspecting combinations. Federal rules require state knowledge tests to use FMCSA-approved CDL test-system knowledge areas and require at least 80% correct.

Time Limit

State-administered knowledge test; no separate Colorado Combination Vehicles time limit is published on the Colorado DMV CDL page

Passing Score

80% minimum on each CDL knowledge test

Exam Fee

$19.00 Colorado commercial learner permit; $17.50 Commercial Driver's License; $11.50 written retest fee if applicable (Colorado Division of Motor Vehicles under FMCSA CDL standards)

Colorado CDL Combination Vehicles Exam Content Outline

10%

Colorado and FMCSA CDL Basics

Combination Vehicles Test requirement, Class A thresholds, ELDT context, Colorado CDL fees, test language availability, and federal 80% passing rule.

18%

Coupling and Fifth Wheel

Fifth wheel inspection, kingpin alignment, high coupling, tug test, visual lock checks, trailer height, fifth wheel locking lever, and pre-departure coupling checks.

18%

Air, Electrical, and Trailer Brakes

Emergency and service glad hands, line seals and routing, trailer air supply, hand valve limits, trailer brake tests, tractor protection valve, ABS warnings, and air leaks.

14%

Landing Gear and Uncoupling

Securing the trailer, lowering landing gear, surface selection, chocks on grades, fifth wheel release sequence, line stowage, and trailer stability checks.

16%

Combination Inspection

Coupling area, trailer structure, suspension, tires, brakes, lights, mud flaps, cargo securement, trailer doors, clearance, and safety-critical defects.

24%

Safe Combination Driving

Off-tracking, safe right and left turns, backing, sight-side maneuvers, following distance, night and mountain driving, railroad clearances, blind spots, rollover, crack-the-whip, trailer skids, and jackknife recovery.

How to Pass the Colorado CDL Combination Vehicles Exam

What You Need to Know

  • Passing score: 80% minimum on each CDL knowledge test
  • Assessment: Multiple-choice CDL knowledge test. Colorado CDL Manual Section 6 covers driving combinations, combination vehicle air brakes and ABS, coupling and uncoupling, and inspecting combinations. Federal rules require state knowledge tests to use FMCSA-approved CDL test-system knowledge areas and require at least 80% correct.
  • Time limit: State-administered knowledge test; no separate Colorado Combination Vehicles time limit is published on the Colorado DMV CDL page
  • Exam fee: $19.00 Colorado commercial learner permit; $17.50 Commercial Driver's License; $11.50 written retest fee if applicable

Keys to Passing

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

Colorado CDL Combination Vehicles Study Tips from Top Performers

1Start with Colorado CDL Manual Section 6 and map every subsection to a task: drive, brake, couple, uncouple, inspect.
2Practice the coupling sequence until you can explain fifth wheel inspection, trailer height, tug test, visual kingpin check, line connection, brake test, and landing gear steps in order.
3Separate red emergency/supply line logic from blue service line logic; many combination questions test crossed lines, leaks, and trailer air supply control.
4Treat rollover and trailer skid questions as speed-and-space questions: slow before curves, steer smoothly, leave room, and release locked trailer brakes to recover skid traction.
5Use Colorado mountain-driving judgment when studying downgrades: choose safe speed early, avoid brake overheating, and preserve space before curves and ramps.
6Do not over-study doubles/triples or hazmat for this exam; keep them in scope only when they clarify common combination vehicle operation.

Frequently Asked Questions

Do I need the Colorado CDL Combination Vehicles Test for a Class A tractor-trailer?

Yes. The Colorado CDL manual states that the Combination Vehicles Test is required if you want to drive combination vehicles. A Class A path also depends on the vehicle ratings and any restrictions from the skills-test vehicle.

What score do I need to pass?

Federal CDL rules require at least 80% correct on each knowledge test. If the combination vehicle portion is failed, federal rules say a Group A CLP or CDL must not be issued.

What should I study for the Colorado combination test?

Use Section 6 of the Colorado Commercial Driver License Manual. It covers driving combinations, combination air brakes and ABS, coupling and uncoupling, and inspecting combinations.

Does this test replace the Air Brakes test?

No. Combination Vehicles includes trailer air-line and trailer brake knowledge in context, but the Air Brakes test is separate when your CDL path or vehicle requires it.

How much does Colorado list for CDL permit and license fees?

Colorado DMV lists a $19.00 Commercial Driver License instruction permit fee, a $17.50 Commercial Driver License fee, and an $11.50 driving knowledge written retest fee if applicable.