CDL - COMBINATION VEHICLE PRACTICE TEST QUESTIONS WITH CORRECT ANSWERS 2025

CDL - COMBINATION VEHICLE PRACTICE
TEST QUESTIONS WITH CORRECT
ANSWERS 2025
AMtractorMwithMa(n)M________MtrailerMrequiresMtheMshortestMamountMofMstoppingMdistanceM.M

1.Mempty

2.MfullyMloaded

3.MlightlyMloadedM-MCORRECTMANSWER-fullyMloaded



TheMairMleakageMrateMforMaMcombinationMvehicleM(MengineMoff,MbrakesMon)MshouldMnotMbeMmoreMt
hanM_____MpsiMperMminuteM.M

1.M4M

2.M6

3.M2M-MCORRECTMANSWER-4



IfMyouMdoMnotMdoMtheMfinalMairMbrakeMcheckMforMairMleaksMandMfixMthemMbeforeMdriving,M

1.MyouMcouldMloseMyourMbrakesMwhileMdriving

2.MyourMfuelMusageMwillMincrease

3.MtireMpressureMwillMdropM-MCORRECTMANSWER-youMcouldMloseMyourMbrakesMwhileMdriving



WhichMpartMofMtheMkingpinMshouldMtheMlockingMjawsMcloseMaround?M-MCORRECTMANSWER-
TheMshank



GladMhandsMareMusedMtoMconnectMtheM....M

1.MkingpinMfromMtheMtrailerMtoMtheMlockingMjawsMofMtheMfifthMwheelM

2.MelectricalMlinesMfromMtheMtractorMtoMtheMtrailerM

, 3.MserviceMandMemergencyMairMlinesMfromMtheMtruckMorMtractorMtoMtheMtrailerM-
MCORRECTMANSWER-serviceMandMemergencyMairMlinesMfromMtheMtruckMorMtractorMtoMtheMtrailer




TrucksMrollMoverMmoreMeasilyMwhenMfullyMloadedMandMareM

1.MtenMtimesMmoreMlikelyMtoMrollMoverMinMaMcrashMthanMemptyMrigs

2.MfiveMtimesMmoreMlikelyMtoMrollMoverMinMaMcrashMthanMemptyMrigs

3.MtwoMtimesMmoreMlikelyMtoMrollMoverMinMaMcrashMthanMemptyMrigsM-MCORRECTMANSWER-
tenMtimesMmoreMlikelyMtoMrollMoverMinMaMcrashMthanMemptyMrigs



InMgeneral,MtheMhigherMyourMtrucksMcenterMofMgravity,MtheM...M

1.MeasierMitMisMtoMturnMoverM

2.MmoreMstableMitMisMwhenMturningM

3.MeasierMitMisMtoMturnMaroundMcornersM-MCORRECTMANSWER-easierMitMisMtoMturnMover



YouMareMdrivingMaMcombinationMvehicleMwhenMtheMtrailerMbreaksMaway,MpullingMapartMbothMairMli
nes.MYouMwouldMexpectMtheMtrailerMbrakesMtoMcomeMonMandM...M

1.MtheMtractorMtoMloseMallMairMpressureM

2.MtheMtractorMprotectionMvalveMtoMcloseM

3.MtheMtrailerMsupplyMvalveMtoMstayMopenM-MCORRECTMANSWER-
theMtractorMprotectionMvalveMtoMclose



WhenMyouMdriveMaMsetMofMdoubles,MwhichMshut-offMvalveMmustMbeMclosedMinMtheMlastMtrailer?M

1.MMiddleMsectionM

2.MfrontMsection

3.MbackMsectionM-MCORRECTMANSWER-backMsection