Texas CDL General Knowledge
Questions with Verified Answers
Merging on to a road is safest if you? - ANSWERSWait for a larger enough gap in traffic
to enter the road
What three things add up to total stopping distance for your truck or bus? -
ANSWERSPerception distance, reaction distance, effective braking distance
You are checking your steering and exhaust systems during a pre-trip inspection which
of these problems if found should be fixed before the vehicle is driven? -
ANSWERSSteering wheel play of more than 10 degrees (2 inches on a 20 inch wheel)
How does vehicle weight affect stopping? - ANSWERSEmpty trucks can take longer to
stop than if loaded, but this is not normally the case for buses
When the roads are slippery you should? - ANSWERSMake turns as gently as possible
Which of these is NOT a good rule when caring for injuries at an accident scene? -
ANSWERSKeep injured persons cool
You are driving on a straight level highway at 50mph there are no vehicles in front of
you suddenly a tire blows out on your vehicle, what should you do? - ANSWERSStay off
the brakes until the vehicle has slowed down
After starting the engine - ANSWERSthe coolant temperature gauge should begin
agradual rise to normal
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 which of these is a good rule to
follow when putting the vehicle back in motion up the grade? - ANSWERSUse the
parking brake to hold the vehicle until the clutch engages
Which of these statements is true about speed management? - ANSWERSWhen the
road is slippery it will take longer to stop and it will be harder to turn without skidding
Where must you keep shipping papers when transporting hazardous materials? -
ANSWERSIn the pouch on the drivers door or in the seat
You should use your mirrors to check? - ANSWERSWhere the rear of your vehicle is
while you make turns.
, Extra care is needed to keep your vehicle centered in your lane because commercial
vehicles - ANSWERSare often wider than other vehicles
Which of these would probably not help if your windshield were covered in ice? -
ANSWERSBrush
Which of these statements about causes of vehicle fires are true? - ANSWERSPoor
trailer ventilation can cause cargo to catch fire.
The purpose of retarders is to - ANSWERSHelp slow the vehicle while driving to reduce
brake wear
Which of these is usually true about driving in hot weather? - ANSWERSYou should
check tire mounting and pressure before driving
Which of these is usually true about driving in tunnels? - ANSWERSThere may be cross
winds when exiting
When driving thru work zones you should? - ANSWERSwatch for sharp pavement drop-
offs
When passing another vehicle, pedestrian, or bicyclist you should assume that -
ANSWERSthey may move into your traffic lane
If you are not sure what to use to put out a hazardous material fire you should -
ANSWERSWait for qualified fire fighters
What should you do when your vehicle hydroplanes? - ANSWERSrelease the
accelerator
Which of these is true regarding the use of drugs while driving - ANSWERSprescription
drugs are allowed if the drugs will not affect safe driving ability
Which of these statements about brakes are true? - ANSWERSThe heavier a vehicle or
the faster its moving, the more heat the brakes have to absorb to stop it
You are driving a new truck with a manual transmission, what gear will you probably
have to use to take along steep down grade hill? - ANSWERSA lower gear than you
would use to climb the hill
Which of these statements about certain types of cargo is true? - ANSWERSunstable
loads such as hanging meat or livestock require extra caution in curves
Which of these statements about marking a stopped vehicle is true? - ANSWERSIf a hill
or curve keeps drivers behind you from seeing the vehicle within 500 feet the reflective
triangle should be moved back to give adequate warning.
Questions with Verified Answers
Merging on to a road is safest if you? - ANSWERSWait for a larger enough gap in traffic
to enter the road
What three things add up to total stopping distance for your truck or bus? -
ANSWERSPerception distance, reaction distance, effective braking distance
You are checking your steering and exhaust systems during a pre-trip inspection which
of these problems if found should be fixed before the vehicle is driven? -
ANSWERSSteering wheel play of more than 10 degrees (2 inches on a 20 inch wheel)
How does vehicle weight affect stopping? - ANSWERSEmpty trucks can take longer to
stop than if loaded, but this is not normally the case for buses
When the roads are slippery you should? - ANSWERSMake turns as gently as possible
Which of these is NOT a good rule when caring for injuries at an accident scene? -
ANSWERSKeep injured persons cool
You are driving on a straight level highway at 50mph there are no vehicles in front of
you suddenly a tire blows out on your vehicle, what should you do? - ANSWERSStay off
the brakes until the vehicle has slowed down
After starting the engine - ANSWERSthe coolant temperature gauge should begin
agradual rise to normal
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 which of these is a good rule to
follow when putting the vehicle back in motion up the grade? - ANSWERSUse the
parking brake to hold the vehicle until the clutch engages
Which of these statements is true about speed management? - ANSWERSWhen the
road is slippery it will take longer to stop and it will be harder to turn without skidding
Where must you keep shipping papers when transporting hazardous materials? -
ANSWERSIn the pouch on the drivers door or in the seat
You should use your mirrors to check? - ANSWERSWhere the rear of your vehicle is
while you make turns.
, Extra care is needed to keep your vehicle centered in your lane because commercial
vehicles - ANSWERSare often wider than other vehicles
Which of these would probably not help if your windshield were covered in ice? -
ANSWERSBrush
Which of these statements about causes of vehicle fires are true? - ANSWERSPoor
trailer ventilation can cause cargo to catch fire.
The purpose of retarders is to - ANSWERSHelp slow the vehicle while driving to reduce
brake wear
Which of these is usually true about driving in hot weather? - ANSWERSYou should
check tire mounting and pressure before driving
Which of these is usually true about driving in tunnels? - ANSWERSThere may be cross
winds when exiting
When driving thru work zones you should? - ANSWERSwatch for sharp pavement drop-
offs
When passing another vehicle, pedestrian, or bicyclist you should assume that -
ANSWERSthey may move into your traffic lane
If you are not sure what to use to put out a hazardous material fire you should -
ANSWERSWait for qualified fire fighters
What should you do when your vehicle hydroplanes? - ANSWERSrelease the
accelerator
Which of these is true regarding the use of drugs while driving - ANSWERSprescription
drugs are allowed if the drugs will not affect safe driving ability
Which of these statements about brakes are true? - ANSWERSThe heavier a vehicle or
the faster its moving, the more heat the brakes have to absorb to stop it
You are driving a new truck with a manual transmission, what gear will you probably
have to use to take along steep down grade hill? - ANSWERSA lower gear than you
would use to climb the hill
Which of these statements about certain types of cargo is true? - ANSWERSunstable
loads such as hanging meat or livestock require extra caution in curves
Which of these statements about marking a stopped vehicle is true? - ANSWERSIf a hill
or curve keeps drivers behind you from seeing the vehicle within 500 feet the reflective
triangle should be moved back to give adequate warning.
