Texas (TX) CDL manual 2026

Practice the manual, chapter by chapter

State manuals are built on the same national model, chapter for chapter. One thing to know from each chapter, then real questions from it to answer — tap an option to check yourself.

1. 1

   Introduction

   Everyone

   If your privilege to operate your personal vehicle is revoked, cancelled, or suspended due to alcohol, controlled substance or felony violations, you will lose your CDL for one year.

   What is the disqualification for a first railroad-highway grade crossing violation?

   1. AAt least 90 days
   2. BAt least 30 days
   3. CAt least 60 days
   4. DAt least 120 days

   A passenger endorsement is required to drive a vehicle designed to transport how many people?

   1. A12 or more passengers, not counting the driver
   2. B15 or more passengers, including the driver
   3. C20 or more passengers, not counting the driver
   4. D16 or more passengers, including the driver
   This chapter has 26 more questions. Practice them in the app and see your pass chance.
2. 2

   Driving Safely

   Everyone

   Consider whether you are taking sedating medications such as antidepressants, cold tablets, or antihistamines.

   What is the final action of the engine compartment step?

   1. ARecord the fluid levels on the report
   2. BWipe down the dipsticks and stow them
   3. CLower and secure the hood, cab, or door
   4. DStart the engine from the fender step

   How often should you take a break on a long trip?

   1. AAbout every 100 miles or 2 hours
   2. BAbout every 250 miles or 4 hours
   3. COnly when you begin to feel drowsy
   4. DAbout every 400 miles or 6 hours
   This chapter has 290 more questions. Practice them in the app and see your pass chance.
3. 3

   Transporting Cargo Safely

   Everyone

   Stopping distance increases with overloading, and brakes can fail when forced to work too hard.

   Which term describes the combined weight of a powered vehicle, its trailer, and all of the cargo being carried?

   1. AGross vehicle weight rating (GVWR)
   2. BGross vehicle weight (GVW)
   3. CAxle weight at the scales
   4. DGross combination weight (GCW)

   What does axle weight measure?

   1. AThe weight of the axle assembly itself
   2. BThe weight of the cargo directly above the axle
   3. CThe maximum load the axle is rated to carry
   4. DThe weight one axle or set of axles puts on the ground
   This chapter has 26 more questions. Practice them in the app and see your pass chance.
4. 4

   Transporting Passengers

   P endorsement (bus)

   Drivers should watch for and refuse hazardous items riders try to bring aboard, such as car batteries or gasoline.

   You have finished loading at a curbside stop and are ready to rejoin traffic in your transit bus. What should you do first?

   1. ASound the horn twice to warn the vehicles behind you
   2. BTurn on the interior lights so riders can see the aisle
   3. CAccelerate briskly to match the speed of passing cars
   4. DCheck your mirrors for traffic, cyclists, and pedestrians

   On buses designed to allow standing, how is the standee line marked?

   1. AA painted stripe on the ceiling
   2. BA four-inch line on the floor
   3. CA row of studs across the aisle
   4. DA two-inch line on the floor
   This chapter has 98 more questions. Practice them in the app and see your pass chance.
5. 5

   Air Brakes

   Any vehicle with air brakes

   The application pressure gauge shows how much air pressure is being applied to the brakes; this gauge is not on all vehicles.

   Where in the air brake system is the safety relief valve installed?

   1. AIn the tank that feeds the spring brake circuit
   2. BIn the line between the pedal and the front chambers
   3. CIn the first tank the compressor pumps air to
   4. DIn the governor housing on the compressor itself

   How is the cab control for a front brake limiting valve normally marked?

   1. A"On" and "off"
   2. B"Normal" and "slippery"
   3. C"Loaded" and "empty"
   4. D"City" and "highway"
   This chapter has 148 more questions. Practice them in the app and see your pass chance.
6. 6

   Combination Vehicles

   Class A

   Tractor protection valve controls or "emergency" valves on older vehicles may not operate automatically.

   After the fifth wheel jaws lock during coupling, how do you confirm the connection with a tug test?

   1. APull forward gently in low gear with the trailer brakes locked
   2. BBack up firmly once more to reseat the kingpin
   3. CShake the release handle while a helper watches the jaws
   4. DRock the trailer sideways using the steering axle

   While backing into a dock you lose track of how much room remains behind the trailer. What should you do?

   1. AStop, get out, and walk back to look at the space
   2. BRely on the convex mirror to judge the remaining distance
   3. CSound the horn and keep backing at a steady speed
   4. DContinue slowly and stop when you feel light contact
   This chapter has 118 more questions. Practice them in the app and see your pass chance.
7. 7

   Doubles and Triples

   T endorsement

   Drivers of long combinations must look far ahead so maneuvers can be gradual.

   You are finishing the coupling of a set of doubles. What is the correct final position of the rear trailer's landing gear?

   1. ARaised completely
   2. BLeft wherever it sat when the dolly went under
   3. CLowered until it just touches the pavement
   4. DLowered enough to take weight off the dolly

   How should you adjust your driving when pulling doubles in rain or snow?

   1. ASlow down and drive with extra caution
   2. BDrive the same as with a single trailer
   3. CFollow other trucks closely to use their tire tracks
   4. DIncrease speed slightly to keep the trailers pulled taut
   This chapter has 98 more questions. Practice them in the app and see your pass chance.
8. 8

   Tank Vehicles

   N endorsement

   Tank vehicles have a high center of gravity, which makes them more prone to rollover.

   Besides leaks, what condition of the tank's body or shell does the inspection cover?

   1. ACondensation on the upper surface
   2. BDents
   3. CChalk marks left by the loading rack
   4. DFading of the painted shipping name

   A tanker driver wants to avoid skids, which are especially dangerous when a liquid load is pushing on the tank. What causes most skids?

   1. ADriving too fast for the road and weather conditions
   2. BWorn steering components that let the front wheels wander
   3. CBrake systems that apply unevenly from one side to the other
   4. DSudden gusts of wind striking the tall sides of the tank
   This chapter has 62 more questions. Practice them in the app and see your pass chance.
9. 9

   Hazardous Materials

   H endorsement

   Table 2 lists 4.2 Spontaneously Combustible with the placard name Spontaneously Combustible.

   Within what period must carriers make detailed written reports of a hazardous materials incident?

   1. AWithin 90 days
   2. BWithin 5 days
   3. CWithin 30 days
   4. DWithin 10 days

   On a portable tank holding less than 1,000 gallons, how tall must the shipping name letters be?

   1. AAt least one inch
   2. BAt least three inches
   3. CAt least two inches
   4. DThere is no minimum for tanks that small
   This chapter has 234 more questions. Practice them in the app and see your pass chance.
10. 10

    School Buses

    S endorsement

    The convex mirrors are located below the outside flat mirrors.

    A student who just exited your bus drops a book, and it slides underneath the bus. What should the student have been taught to do?

    1. ALeave the item, move away from the bus, and get the driver's attention for help
    2. BCrawl under the bus quickly while the red lights are still flashing
    3. CWait quietly beside the rear wheels until the driver finishes the route
    4. DKnock on the service door and reach beneath the bumper for the item

    While a school bus is being driven on its route, what is the rule for the emergency exit doors?

    1. AThey must be securely closed whenever the bus is being operated
    2. BThey only need to be closed when students are actually on board
    3. CThey may stay open whenever an adult monitor rides in the back
    4. DThey may be latched half-open to help cool the bus in hot weather
    This chapter has 98 more questions. Practice them in the app and see your pass chance.
11. 11

    Pre-Trip Vehicle Inspection

    Everyone (skills test)

    Inspect the stop arms, if equipped, are securely mounted to the vehicle frame and there are no loose, broken, or damaged parts.

    Which lights should you turn on before starting the exterior walk-around portion of your inspection?

    1. AParking lights and the interior dome light
    2. BHigh beam headlights and the front fog lamps
    3. CLow beam headlights and the four-way flashers
    4. DLeft turn signal and all the clearance lights

    What is the stated function of the lug nuts?

    1. ATo retain the brake drum on the hub
    2. BTo center the tire on the rim
    3. CTo seal the hub against water entry
    4. DTo hold the wheel on the axle
    This chapter has 200 more questions. Practice them in the app and see your pass chance.

The official Texas CDL manual