texas
CDL Practice Test

As you prepare to obtain your CDL in Texas, you can use this site as a guide for practicing common test questions. Rules and regulations covered on these practice tests for a CDL are based on questions from the Texas TxDPS CDL manual. You can take these practice tests as often as you like on your computer or mobile device, and all the tests on this site are 100% free. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

Which of the following is the proper definition of a cargo tank?

A bulk container which can be securely affixed to a vehicle.

A bulk container not permanently attached to a vehicle.

A bulk container permanently attached to a vehicle.

None of these answers are correct.

2 / 40

The best way to test if the spring brakes come on automatically is to:

apply pressure on and off the brake pedal until the parking valve pops out on single vehicles

apply pressure on and off the brake pedal until the manufacturer's low psi specification has been met for the spring brakes to deploy

all of these answers are correct

apply pressure on and off the brake pedal until the parkng brake valve pops out on tractor-trailer vehicles

3 / 40

Which of the following will confirm that you are driving with anti-lock brakes?

Red indicator lamp on the brake cylinder.

The bus operators manual.

Yellow abs malfunction lamp on the instrument panel will light when you start the engine.

The certification on the driver side door.

4 / 40

When accelerating:

speed up smoothly and gradually and avoid jerking

always use the parking brake to slow down

"hammer down" when your wheels start to spin

do not engage the clutch before you take your foot off the brake

5 / 40

How much space should there be between the lower and upper fifth wheel?

1/4 to 1/2 of an inch

1 to 2 inches

zero

it is dependent on the load you are carrying

6 / 40

Select which is not a mandatory emergency equipment:

Tire changing equipment.

Extra electrical fuses.

A rated and properly charged fire extinguisher.

6 fuses, 3 red reflective triangles, or 3 liquid burning flares.

7 / 40

You should brake on a long steep downgrade hill as a supplement to the braking effects of the engine

when the GVCW is above 20,000 lbs

yes

when the vehicle is runaway

8 / 40

Select the true statement in regards to what the fifth wheel should be checked for.

if there is any missing or damaged parts

all answers listed

if it is properly greased

if the jaws are open

9 / 40

The method for testing hydraulic brakes for leaks is to _____.

pump the brake pedal 3 times and apply firm pressure for 5 seconds the pedal should not move

pump the brake pedal 5 times and apply firm pressure for 3 seconds the pedal should not move

hold the brake down for 5 seconds and listen for leaks

all of these answers are correct

10 / 40

How do you supply air to the trailer tanks?

by connecting the service line glad hand

by pushing in the trailer air supply valve

by connecting the red and blue lines

by pulling out the trailer air supply valve

11 / 40

Why should you test the tractor protection valve?

all answers listed

to avoid loss of air from the air hose

to avoid loss of air from the trailer brakes

to avoid the emergency brakes kicking on due to loss of air

12 / 40

When would a drive-wheel skid result in a jackknife when pulling doubles?

when the trailer pushes the towed vehicle sideways

when the trailer slides to the right into the shoulder

when the tractor spins around

when the tractor brakes lock up

13 / 40

You should follow the posted speed limits for curves and be aware of:

The posted speed limit may be too high for safety.

All answers listed.

A rollover may occur even when driving at the posted speed limit.

The higher center of gravity on a tank truck.

14 / 40

For what reason do you keep the starter switch key in your pocket during the pre-trip inspection?

so you don't lose it

so no one moves the vehicle while you are inspecting underneath it

you will need it to inspect the trailer

you will need it to open the side box

15 / 40

Select the factors that can cause your brakes to fade or fail:

all of these answers are correct

the brakes are out of adjustment

not relying on engine braking enough

using the service brakes excessively

16 / 40

Select the statement that is true in regards to quick steering movements and triple/double trailers:

there are no issues that occur from quick steering

they flip over due to quick steering movements a lot easier than other vehicles

as you perform quick steering movements you should apply pressure to the brake pedal

it is easier to countersteer compared to other vehicles

17 / 40

Which of the following should you do when driving the school bus in high wind?

Drive only head-in to the wind to avoid cross-wind buffeting.

Speed up to get away from the wind as quickly as possible.

Keep a strong grip on the steering wheel and try to anticipate gust.

Pull off the road to wait for the winds to die down.

18 / 40

Which of the following statements is FALSE:

Do not tow or push a disabled bus with riders aboard either vehicle, unless getting off the bus would be unsafe.

Do not transport intoxicated passengers.

Do not talk with riders or engage in any other distracting activity while driving.

Avoid fueling your bus with riders on board unless absolutely necessary. never refuel in a closed building with riders on board.

19 / 40

Select why you should not use the trailer hand valve while driving:

you should only ever use the parking brake

it does not work as well as the foot brake does

there is a possibility it will make the trailer skid

it will cause the tractor to shake

20 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

6 seconds

4 seconds

5 seconds

3 seconds

21 / 40

Be careful to check the_____when unloading the smaller tanks of bulk heads.

percentage of alcohol

percentage of water

the fuel to air ratio

weight distribution

22 / 40

On a bus, you may sometimes haul small-arms ammunition, emergency shipments of drugs, or hospital supplies. The total weight of all such hazardous materials must not be greater than:

250 pounds

100 pounds

500 pounds

300 pounds

23 / 40

A tractor should not be backed under a trailer until the whole air system is:

at a level of 50 and 70 psi

at half of its normal pressure

at a level of 70 and 90 psi

at a normal pressure

24 / 40

The interlock system for the brake and accelerator on a transit coach may be used:

As a safety feature when the exit door is open.

To replace the parking brake.

All of these answers are correct.

To replace the rear door emergency buzzer.

25 / 40

How many different hazard classes are there?

26 / 40

Which seats not securely fastened to the bus are usually allowed?

None of these answers are correct.

The driver's seat only.

Window seats.

Any of the last row seats.

27 / 40

With Division 1.1, 1.2, or 1.3 Class A or B, how close can you park to a bridge, tunnel, or building?

Do not park within 300 feet.

Do not park within 100 feet.

Do not park within 500 feet.

Do not park within 200 feet.

28 / 40

You must not allow riders to stand:

Within two feet of an emergency exit.

Within two feet of any window.

Between the wheel wells.

In front of the standee line.

29 / 40

Select the item that is not checked in the engine compartment:

The oil pressure

The level of the oil

The power steering fluid

The coolant level

30 / 40

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

this is not recommended because it may result in injury

this is recommended because it keeps the trailer from tipping over

this is not recommended as it could could cause damage to the pintle hook

this is recommended as it is standard procedure

31 / 40

Select the reason as to why you should not use the trailer hand valve while driving.

it releases too much air from the system

the trailer brakes will not be evenly applied

it should not be used on dry roads due to road conditions

it could cause the trailer to skid

32 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

about two car lengths

about 1/4 mile

about two truck lengths

about the length of a football field or 100 yards

33 / 40

Which of the following statements about overhead space is true?

the weight of the cargo changes a truck's height

an empty van is lower than a loaded one

athe heights posted at bridges are usually accurate

warning lights are always installed on low bridges and overpasses

34 / 40

Mirrors with a convex surface or "spot" mirrors _____.

make things look closer and larger than they actually are

they show a larger area than flat mirrors so do not need to be checked as often

make things look farther away and smaller than they actually are

are illegal in most states

35 / 40

A trailer is at the right height to have the tractor backed up to it when:

it'll raise slightly when the tractor is backed up under it

the fifth wheel will not come in contact with the kingpin

the top of the kingpin is even with the bottom of the fifth wheel

the kingpin is about 1 1/5 inches above the fifth wheel

36 / 40

In what location must you keep your shipping papers which describe any hazardous materials?

In a fire-safe pouch under the passenger seat while you are driving.

In a locked glove compartment anytime you are outside of the vehicle.

In a fire-safe pouch under the driver's seat that you can reach while you are driving.

On the driver's seat anytime you are outside of the vehicle.

37 / 40

If you are stopped on an incline, how can you start moving without rolling back?

apply the parking brake

shift to neutral

fully engage the clutch

aggressively pump the accelerator

38 / 40

Select the statement that is not part of the air-brake system:

service brake system

emergency brake system

parking brake system

clutch brake system

39 / 40

Select the true statement in regards to when a bulk tank vehicle stops at an intersection on a slippery surface:

The liquid may leak out of the tank.

The movement of the liquid may push the truck into the intersection.

The trailer may slide into the oncoming traffic.

The trailer may slide to the side due to the rocking motion.

40 / 40

At what "cut out" level does the governor stop pumping air?

125 psi

100 psi

75 psi

150 psi

Your score is

The average score is 0%

4/5 - (2 votes)

CDL Category Practice Tests

CDL Practice Test

How To Get A texas Commercial Drivers License

To be eligible for a CDL in Texas, applicants must meet the following age eligibility requirements.

Be at least 18 years old to operate a commercial vehicle intrastate (within Texas only).
Be at least 21 years old to operate a commercial vehicle interstate (outside of Texas).

Texas CDL applicants must be medically certified that they are fit enough to operate a commercial vehicle and pass a vision test. Applicants are required to submit the following documents.

(Form CDL-4) Interstate Driver Certification
(Form CDL-5) Intrastate Driver Certification
(Form CDL-10) Certificate of Physical Exemption 49 CFR Part 391/390

Some applicants may be required to submit a Medical Examiner’s Certificate. Drivers who have had their licenses revoked, suspended, denied or canceled are not eligible for a CDL in Texas. Applicants can be disqualified for having multiple licenses.

Texas CDL Endorsements

H – Hazmat Vehicles
N – Tank Vehicles
P – Passenger Vehicles
S – School Bus
T – Double or Triple Trailer
X – Combination Tank Vehicles and Hazmat Vehicles

Hit the Open Road

texas CDL License Test Tips

All Texas CDL applicants must pass the general knowledge test prior to taking the skills test. This test consists of 50 questions. To pass the Texas CDL test, applicants must score 80 percent or higher. Applicants who require additional endorsements must pass additional tests and pay the required fees. The Texas skills test can be taken 14 days after applicants pass the knowledge test. It includes a pre-trip vehicle inspection, basic control skills and on-road driving. Applicants must pass each section.

Military veterans and current military members can apply to have the skills exam waived if they meet the requirements. To qualify for a waiver, applicants must be currently enlisted in the military and:

Possess a valid Texas driver’s license.
Have at least 2 years of military truck driving experience. The military vehicle must be similar to the commercial motor vehicle.
Have been honorably discharged from the military within the past 12 months.
Submit (Form CDL-ST WVR) Application for Military Skills Test Waiver signed by your commanding officer.

Additional Information

Information on the Texas Department of Public Safety

The Texas Department of Public Safety administers CDL license requirements in Texas. To get more information contact them via:

Website: http://www.dps.texas.gov/DriverLicense/CommercialLicense.htm

Phone: 512.424.2000

Additional Texas CDL Helpful Links

Please use the links below to access Texas CDL testing resources and to learn more about practice driving tests for the state of Texas.

texas CDL Practice Test

CDL Category Practice Tests

CDL Practice Test

How To Get A texas Commercial Drivers License

Hit the Open Road

texas CDL License Test Tips

Additional Information

Information on the Texas Department of Public Safety

Additional Texas CDL Helpful Links

texas
CDL Practice Test