MICHIGAN CDL PRACTICE TEST QUESTIONS WITH CORRECT ANSWERS 2025

MICHIGAN CDL PRACTICE TEST
QUESTIONS WITH CORRECT ANSWERS
2025
TheUrodsUinUS-
camUbrakesUmoveUtheUslackUadjustersUwhenUairUpressureUisUaddedUtoUtheUbrakeUchambers.UThisUairUpress
ureUisUaddedUtoUtheUchambersUwhenUtheUdriver:



A.UPressesUtheUbrakeUpedal.

B.UUsesUtheUemergencyUbrake.

C.UUsesUtheUtrailerUhandUvalve.U-UCORRECTUANSWERU-A.UPressesUtheUbrakeUpedal.



WhenUpressingUtheUbrakeUpedalUinUaUvehicleUwithUS-
camUbrakes,UairUwillUenterUtheUbrakeUchambers.UTheUaddedUairUpressureUwillUpushUoutUtheUrodsUandUmov
eUslackUadjusters,UtwistingUtheUbrakeUcamshafts.



IfUmirrorsUareUdirtyUbeforeUstartingUaUtrip:



A.UTheyUwillUlikelyUbecomeUcleanUafterUdrivingUaUshortUdistance.

B.UItUshouldUnotUbeUaUconcern.

C.UTheyUshouldUbeUcleanedUbeforeUtheUvehicleUisUdriven.U-UCORRECTUANSWERU-
C.UTheyUshouldUbeUcleanedUbeforeUtheUvehicleUisUdriven.



DuringUaUpre-
tripUinspection,UbeUsureUtoUcheckUtheUmirrorsUandUwindshieldUforUdirtUandUanythingUelseUthatUcouldUinterf
ereUwithUyourUabilityUtoUsee.UCleanUthemUasUnecessary.



DrivingUatUnightUis:



A.USaferUthanUdrivingUduringUtheUday.

B.UJustUasUsafeUasUdrivingUduringUtheUday.

,C.UMoreUdangerousUthanUdrivingUduringUtheUday.U-UCORRECTUANSWERU-
C.UMoreUdangerousUthanUdrivingUduringUtheUday.



DrivingUatUnightUisUmoreUdangerousUthanUdrivingUduringUtheUdayUbecauseUhazardsUbecomeUmoreUdifficultU
toUseeUinUtheUdark.



TheU____UareUactivatedUbyUanUelectricUswitchUthatUisUtriggeredUbyUtheUbrakeUpedal.



A.UHeadlights

B.UTurnUsignals

C.UBrakeUlightsU-UCORRECTUANSWERU-C.UBrakeUlights



InUaUvehicleUwithUairUbrakes,UtheUbrakeUlightsUareUactivatedUwhenUtheUbrakeUpedalUisUpushedUandUairUpres
sureUmovesUanUelectricUswitch.UWithUtheUapplicationUofUairUpressure,UtheUswitchUwillUthenUturnUonUtheUbr
akeUlights.



ReadingUaUtextUmessageUwhileUdrivingUis:



A.UEncouraged.

B.UAllowedUonlyUifUyouUareUnotUpullingUaUtrailer.

C.UIllegal.U-UCORRECTUANSWERU-C.UIllegal.



SendingUandUreadingUtextUmessagesUwhileUdrivingUisUbothUdangerousUandUillegal.



AUsteeringUwheelUshouldUbe:



A.UHeldUwithUoneUhandUwhileUtheUotherUhandUrests.

B.UHeldUwithUbothUhandsUtoUensureUanUadequateUgrip.

C.UReleasedUifUtheUvehicleUisUapproachingUaUbump.U-UCORRECTUANSWERU-
B.UHeldUwithUbothUhandsUtoUensureUanUadequateUgrip.

, AUsteeringUwheelUshouldUbeUheldUfirmlyUwithUeachUhandUonUoppositeUsidesUofUtheUwheel.



AUCDLUisUvalidUfor:



A.UOneUyear.

B.UTwoUyears.

C.UFourUyears.U-UCORRECTUANSWERU-C.UFourUyears.



InUMichigan,UCDLsUmustUbeUrenewedUeveryUfourUyears.UCDLsUmustUbeUrenewedUinUpersonUatUyourUlocalUS
ecretaryUofUStateUoffice.



AUpersonUmustUbeUatUleastU____UtoUoperateUaUCMVUinUintrastateUcommerce.



A.U18UyearsUold

B.U21UyearsUold

C.U25UyearsUoldU-UCORRECTUANSWERU-A.U18UyearsUold



AUdriverUmustUbeUatUleastU21UyearsUoldUtoUoperateUaUCMVUinUinterstateUcommerce.UDriversUmayUbeU18Uye
arsUoldUtoUdriveUaUCMVUonlyUwithinUtheUstateUofUMichigan.



WhatUhelpsUpreventUwheelUlockupUwhenUbraking?



A.UAnUAnti-LockUBrakingUSystemU(ABS)

B.UAirUbrakes

C.UAnUalternatorU-UCORRECTUANSWERU-A.UAnUAnti-LockUBrakingUSystemU(ABS)
U


TheUpurposeUofUanUAnti-
LockUBrakingUSystemU(ABS)UisUtoUpreventUwheelUlockupUwhileUbrakesUareUbeingUapplied.