Take Colorado CDL Combination Vehicles Practice Questions - Colorado CDL Combination Vehicles Test Exam

QUESTION 1 / 25

In Colorado CDL testing, which knowledge test is required if you want to drive combination vehicles?

Choose one answer below.

APassenger Transport Test✓BCombination Vehicles Test✓CHazardous Materials Test✓DTank Vehicle Test✓

QUESTION 2 / 25

Under 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?

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A5,000 pounds✓B10,000 pounds✓C16,000 pounds✓D26,001 pounds✓

QUESTION 3 / 25

What minimum score does federal CDL regulation require on each CDL knowledge test, including combination vehicles?

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A60 percent✓B70 percent✓C80 percent✓D90 percent✓

QUESTION 4 / 25

What happens under 49 CFR 383.135 if an applicant fails the combination vehicle portion of the knowledge test?

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AThe applicant may still receive an unrestricted Group A CLP✓BThe applicant must not be issued a Group A CLP or CDL✓COnly a hazmat endorsement is delayed✓DThe applicant receives a passenger-only restriction✓

QUESTION 5 / 25

Which Colorado DMV fee is listed for a Commercial Driver License instruction permit?

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A$$11.50✓B$$17.50✓C$$19.00✓D$$34.00✓

QUESTION 6 / 25

Colorado DMV states the CDL Knowledge Test is available in which languages?

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AEnglish only✓BEnglish and Spanish✓CEnglish, Spanish, and French✓DAny language with an interpreter✓

QUESTION 7 / 25

FMCSA test-method rules require state CDL knowledge tests to be based on what source?

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ACompetitor practice-test websites✓BA pre-approved FMCSA question pool comparable to AAMVA CDL test system materials✓COnly questions written by each local testing office✓DEmployer training handouts✓

QUESTION 8 / 25

Which three areas does 49 CFR 383.111 specifically require combination-vehicle drivers to know?

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AHazmat placarding, school bus loading, and passenger management✓BCoupling and uncoupling, combination vehicle inspection, and general operating practices including air brakes✓CMotorcycle balance, helmet law, and lane splitting✓DDispatcher procedures, payroll, and fuel-tax filing✓

QUESTION 9 / 25

Which vehicle restriction can result from taking a Class A skills test in a non-fifth-wheel combination?

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AO restriction limiting Class A fifth-wheel tractor-trailer operation✓BH hazmat endorsement✓CP passenger endorsement✓DN tank endorsement✓

QUESTION 10 / 25

Which topic mix best matches Colorado CDL Manual Section 6 for Combination Vehicles?

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ADriving combinations, combination air brakes and ABS, coupling and uncoupling, and inspecting combinations✓BOnly passenger loading and fare collection✓COnly hazmat placards and shipping papers✓DOnly motorcycle balance and cornering✓

QUESTION 11 / 25

What is a combination vehicle?

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AA straight truck with cargo loaded in the bed✓BA truck or tractor pulling one or more trailers✓CAny commercial vehicle with a GVWR over 10,000 lb✓DA vehicle with both gasoline and diesel engines✓

QUESTION 12 / 25

Which of the following is the most common combination vehicle on U.S. highways?

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ATractor with a full trailer✓BTractor-semi-trailer✓CTractor pulling three trailers✓DStraight truck with a converter dolly✓

QUESTION 13 / 25

What does GCWR stand for?

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AGross Cargo Weight Rating✓BGross Combination Weight Rating✓CGeneral Combined Weight Reference✓DGovernment Commercial Weight Regulation✓

QUESTION 14 / 25

A Class A CDL is required when the combination has a GCWR of at least 26,001 lb AND the towed unit has a GVWR over:

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A5,000 lb✓B8,000 lb✓C10,000 lb✓D12,000 lb✓

QUESTION 15 / 25

What is off-tracking?

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AThe trailer drifting sideways on a wet road✓BThe rear wheels of the trailer following a tighter path than the tractor's front wheels in a turn✓CLoss of tire traction during heavy braking✓DThe vehicle leaving its travel lane on a curve✓

QUESTION 16 / 25

You are making a right turn in a tractor-semi-trailer at a city intersection. Because of off-tracking, you should:

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ATurn the wheel as soon as the cab clears the curb✓BDrive farther into the intersection so the trailer's rear wheels clear the curb✓CMake the turn as tightly as possible to stay in your lane✓DSlow down and use the trailer hand valve to stabilize✓

QUESTION 17 / 25

When making a left turn in a combination vehicle, you should:

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AMake the tightest left turn possible to clear faster✓BStart in the right-most lane available✓CWatch for vehicles passing on your left in the lane next to you✓DUse the trailer hand valve halfway through the turn✓

QUESTION 18 / 25

Compared to a straight truck, a combination vehicle's steering response is:

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AFaster and more direct✓BDelayed and requires smaller, earlier corrections✓CIdentical✓DOnly affected by trailer length, not response time✓

QUESTION 19 / 25

What is a jackknife?

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AA loose connection between the kingpin and fifth wheel✓BThe tractor and trailer fold against each other at the coupling✓CA type of converter dolly used with doubles✓DA skid in which all four trailer tires lose traction simultaneously✓

QUESTION 20 / 25

If you start to feel the trailer skidding and swinging out behind you, what is the correct response?

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AApply the trailer hand valve to slow the trailer✓BSteer in the same direction as the trailer is swinging✓CGet off the brakes so the trailer wheels can roll and the trailer can return inline✓DUse the parking brake to lock the trailer in place✓

QUESTION 21 / 25

Why are empty trailers more prone to brake lock-up than loaded trailers?

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AThe brakes are smaller on empty trailers✓BThere is less weight on the tires, so they can lock up more easily✓CEmpty trailers use different brake fluid✓DEmpty trailers run at lower air pressure✓

QUESTION 22 / 25

Stopping distance for a combination vehicle is:

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AShorter than for a straight truck of the same weight✓BAbout the same as a passenger car✓CSignificantly longer than for a straight truck✓DIndependent of speed because of trailer brakes✓

QUESTION 23 / 25

On a wet, slippery road in a combination vehicle, you should:

Choose one answer below.

AReduce speed and increase following distance✓BMaintain normal speed but use the trailer hand valve✓CBrake harder than normal to compensate✓DDrive in the right lane only✓

QUESTION 24 / 25

What is the kingpin?

Choose one answer below.

AA locking lever on the fifth wheel✓BA vertical pin in the trailer apron that locks into the fifth wheel jaws✓CA bolt that secures the landing gear✓DThe release handle for the trailer brakes✓

QUESTION 25 / 25

Before backing under a trailer, the locking jaws on the fifth wheel must be:

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AClosed and locked✓BOpen✓CRemoved for inspection✓DGreased and closed✓