CDL General Knowledge Questions
with Verified Answers
You are drving on straight , level highway at 50rpm. There are no vehicles in front of
you. Suddenly a tire blows out of your vehicle, what should you do first? -
ANSWERSstay off the brake until the vehicle has slowed down
you are driving a truck with manual transmission. what gear will you probably have to
use to take a long, steep downhill grade? - ANSWERSa lower gear than youd take
going up the hill
You are checking your wheels and rims for a pre trip inspection. Which of these
statements is true? - ANSWERSrust around wheel nuts may mean that they are loose
You are checking ou tires for a pre-trip inspection. which of these statements is true? -
ANSWERStires of mismatched size should not be used together in the same vehicle
If a straight vehicle (no trailer or articulation) goes into a front wheel skid it will: -
ANSWERSgo straight ahead even if the steering is turned
if you need to leave the road in a traffic emergency, you should: - ANSWERSavoid
breaking until your speed has dropped to about 20mph
which of statements about certain types of cargo is true? - ANSWERSunstabel load
such as hanging meat or livestock can require extra caution on curves
according to the drivers manual. why should you limit the use of the horn - ANSWERSit
can startle other drivers
you do not have a HAZMAT endorsement on your commercials drivers license. you are
asked to deleiver hazardous material in a placarded vehicle, You should: -
ANSWERSrefuse to haul the load
which of these statements about staying alert to drive is true? - ANSWERSsleep is the
only thing that can overcome fatigue
Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake
pedal and find that it goes to the floor. Which of these statements is true? -
ANSWERSpumping the break perdal may bring the pressure up so you can stop the
vehicle
,you are drving a vehicle at 55 mph on dry pavement. About how much total stopping
distance will you need to bring it to a stop? - ANSWERSthe length of a football field
which of these statments about cold weather driving is true? - ANSWERSwindshield
washer antifreeze should be used
when driving at night, you should: - ANSWERSadjust your speed to keep your stopping
distance within your sight distance
which of these statments about downshifting is true? - ANSWERSwhen you downshift
for a curve you should do so before you enter the curve
for you safety when setting out reflecive traingles you should: - ANSWERShold the
traingles between yourself and oncoming traffic
as the blood alchol concentration (BAC) goes up, what happens? - ANSWERSjudgment
and self-control are affected
which of these is a good thing to remember about using mirrors? - ANSWERSthere are
blind spots that your mirror cannot show
hydroplanning: - ANSWERSis more likly to happen if the tire pressure is low
if you are being tailgated, you should? - ANSWERSIncrease your following distance
a key principle to remember about loading cargo is to keep the load: -
ANSWERSbalanced in the cargo area
how far should a driver look ahead of the vehicle while driving? - ANSWERS12 - 15
seconds
how do you correct a drive wheel acceleration skid? - ANSWERSstop accelerating
The purpose of retarders is to: - ANSWERSHelp slow the vehicle while driving and
reduce brake wear.
controlled braking: - ANSWERSIs used to keep a vehicle in a straight line when braking.
which of these is a good thing to do when steering to avoid a crash - ANSWERSdont
turn any more than needed to clear is in your way
you should stop driving: - ANSWERSWhenever you become sleepy
which of these is NOT a good rule to follo when caring for injured persons at an
accident scene? - ANSWERSkeep injured persons cool
, You should avoid driving through deep puddles or flowing water. But if you must, which
of these steps can help keep your brakes working? - ANSWERSgently putting on the
brakes while driving through the water
which of these statements about drugs is true? - ANSWERSuse of drugs can lead to an
accident and/or arrest
which of these is a good thing to remember when crossing or entering traffic with a
heavy vehicle? - ANSWERSheavy vehicles need larger gaps in traffic than cars.
you are driving a heavy vehicle with a manual transmission. You have to stop the
vehicle on the shoulder while driving on an uphill grade. whichof these is a good rule to
follow when putting it back in motion up the grade? - ANSWERSuse the parking brake
to hold te=he vehicle until the clutch engages
you are driving a heavy vehicle. You must exit a highway using an off ramp that curves
downhill, You should: - ANSWERSslow down to a safe speed before the curve
You must park on the side of a level, straight, four lane, divided highway. Where should
you place the three reflective triangles? - ANSWERSone withing 10 ft of the rear of the
vehivle, on about 100 ft to the rear, and one about 200 ft to the rear
you are driving on a two lane road. An oncoming driver drifts into your lane and is
headed straight for you. which of these is most often the best action to take? -
ANSWERSsteer to the right
brake fade - ANSWERScan be used by the brakes getting very hot
which of these statements about engine overheating is true? - ANSWERSyou should
never remove the radiator cap on a pressurized system until the system is cooled
which of these statements about overhead clearance is true - ANSWERSthe weight if
the cargo changes the height of the truck
which of these statements about vehicle fire is true? - ANSWERSa burning tire should
be cooled with water
you must drive on a slippery road. which of these is a goof thing to do in such a
situtation? - ANSWERSslow down gradually
which of these statments is true about acceleration is true? - ANSWERSrough
accleration can cause mechanical damage
which of these statements about brakes is true? - ANSWERSThe heavier a vehicle or
the faster it is moving, the more heat the brakes have to absorb to stop it.
with Verified Answers
You are drving on straight , level highway at 50rpm. There are no vehicles in front of
you. Suddenly a tire blows out of your vehicle, what should you do first? -
ANSWERSstay off the brake until the vehicle has slowed down
you are driving a truck with manual transmission. what gear will you probably have to
use to take a long, steep downhill grade? - ANSWERSa lower gear than youd take
going up the hill
You are checking your wheels and rims for a pre trip inspection. Which of these
statements is true? - ANSWERSrust around wheel nuts may mean that they are loose
You are checking ou tires for a pre-trip inspection. which of these statements is true? -
ANSWERStires of mismatched size should not be used together in the same vehicle
If a straight vehicle (no trailer or articulation) goes into a front wheel skid it will: -
ANSWERSgo straight ahead even if the steering is turned
if you need to leave the road in a traffic emergency, you should: - ANSWERSavoid
breaking until your speed has dropped to about 20mph
which of statements about certain types of cargo is true? - ANSWERSunstabel load
such as hanging meat or livestock can require extra caution on curves
according to the drivers manual. why should you limit the use of the horn - ANSWERSit
can startle other drivers
you do not have a HAZMAT endorsement on your commercials drivers license. you are
asked to deleiver hazardous material in a placarded vehicle, You should: -
ANSWERSrefuse to haul the load
which of these statements about staying alert to drive is true? - ANSWERSsleep is the
only thing that can overcome fatigue
Your vehicle has hydraulic brakes. While traveling on a level road, you press the brake
pedal and find that it goes to the floor. Which of these statements is true? -
ANSWERSpumping the break perdal may bring the pressure up so you can stop the
vehicle
,you are drving a vehicle at 55 mph on dry pavement. About how much total stopping
distance will you need to bring it to a stop? - ANSWERSthe length of a football field
which of these statments about cold weather driving is true? - ANSWERSwindshield
washer antifreeze should be used
when driving at night, you should: - ANSWERSadjust your speed to keep your stopping
distance within your sight distance
which of these statments about downshifting is true? - ANSWERSwhen you downshift
for a curve you should do so before you enter the curve
for you safety when setting out reflecive traingles you should: - ANSWERShold the
traingles between yourself and oncoming traffic
as the blood alchol concentration (BAC) goes up, what happens? - ANSWERSjudgment
and self-control are affected
which of these is a good thing to remember about using mirrors? - ANSWERSthere are
blind spots that your mirror cannot show
hydroplanning: - ANSWERSis more likly to happen if the tire pressure is low
if you are being tailgated, you should? - ANSWERSIncrease your following distance
a key principle to remember about loading cargo is to keep the load: -
ANSWERSbalanced in the cargo area
how far should a driver look ahead of the vehicle while driving? - ANSWERS12 - 15
seconds
how do you correct a drive wheel acceleration skid? - ANSWERSstop accelerating
The purpose of retarders is to: - ANSWERSHelp slow the vehicle while driving and
reduce brake wear.
controlled braking: - ANSWERSIs used to keep a vehicle in a straight line when braking.
which of these is a good thing to do when steering to avoid a crash - ANSWERSdont
turn any more than needed to clear is in your way
you should stop driving: - ANSWERSWhenever you become sleepy
which of these is NOT a good rule to follo when caring for injured persons at an
accident scene? - ANSWERSkeep injured persons cool
, You should avoid driving through deep puddles or flowing water. But if you must, which
of these steps can help keep your brakes working? - ANSWERSgently putting on the
brakes while driving through the water
which of these statements about drugs is true? - ANSWERSuse of drugs can lead to an
accident and/or arrest
which of these is a good thing to remember when crossing or entering traffic with a
heavy vehicle? - ANSWERSheavy vehicles need larger gaps in traffic than cars.
you are driving a heavy vehicle with a manual transmission. You have to stop the
vehicle on the shoulder while driving on an uphill grade. whichof these is a good rule to
follow when putting it back in motion up the grade? - ANSWERSuse the parking brake
to hold te=he vehicle until the clutch engages
you are driving a heavy vehicle. You must exit a highway using an off ramp that curves
downhill, You should: - ANSWERSslow down to a safe speed before the curve
You must park on the side of a level, straight, four lane, divided highway. Where should
you place the three reflective triangles? - ANSWERSone withing 10 ft of the rear of the
vehivle, on about 100 ft to the rear, and one about 200 ft to the rear
you are driving on a two lane road. An oncoming driver drifts into your lane and is
headed straight for you. which of these is most often the best action to take? -
ANSWERSsteer to the right
brake fade - ANSWERScan be used by the brakes getting very hot
which of these statements about engine overheating is true? - ANSWERSyou should
never remove the radiator cap on a pressurized system until the system is cooled
which of these statements about overhead clearance is true - ANSWERSthe weight if
the cargo changes the height of the truck
which of these statements about vehicle fire is true? - ANSWERSa burning tire should
be cooled with water
you must drive on a slippery road. which of these is a goof thing to do in such a
situtation? - ANSWERSslow down gradually
which of these statments is true about acceleration is true? - ANSWERSrough
accleration can cause mechanical damage
which of these statements about brakes is true? - ANSWERSThe heavier a vehicle or
the faster it is moving, the more heat the brakes have to absorb to stop it.
