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.
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.