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Combination Vehicle Test

Підготовка до тесту про тягачі з причепами, coupling, off-tracking, заноси та безпечне гальмування.

Цей розділ потрібен водіям, які планують керувати combination vehicle. Особливу увагу приділіть coupling inspection та запобіганню trailer skid.

ПРАКТИЧНИЙ ТЕСТ

Combination Vehicles

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01Before backing under a trailer, you should make sure:Trailer brakes are lockedTrailer brakes are releasedLanding gear is fully raisedAir lines are connected to the tractor only

02The trailer hand valve should be used:For parkingTo test trailer brakesOn every downhillInstead of the foot brake

03When coupling glad hands, you should:Cross the linesMatch colors or tagsLeave seals dirtyConnect at any angle

04Off-tracking means:Rear wheels follow a different path inside the front wheelsTrailer brakes lockThe fifth wheel is looseThe tractor pulls left

05If a trailer begins to skid, you should:Use the trailer hand brakeRelease the brakes to regain tractionAccelerate hardSteer sharply

06After coupling, check the connection by:Driving at highway speedPulling gently against locked trailer brakesRaising landing gear firstDisconnecting air lines

07The fifth-wheel locking jaws should close around the:ApronKingpin shankKingpin headLanding gear

08Combination vehicles are more likely to roll over when:Driven too fast in curvesEmpty onlyUsing mirrorsTraveling straight

09Before uncoupling, the trailer should be:On soft groundSupported by landing gear on firm groundAt a sharp angleWith brakes released

10Why allow extra following distance with a combination vehicle?It accelerates fasterIt is longer and needs more stopping spaceMirrors are smallerThe trailer is lighter

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