Knowledge Test Class A #2
Class A Driving Test | Texas 2026 #2 Page 4 of 10
Train for FREE online with our Texas class A license test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a TX CDL class A permit in 2026, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that CDL class A requirements may vary from state to state.
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22 . To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Keep the control at the halfway mark.
Some pre-1975 vehicles have a front brake limiting valve, which has "normal" and "slippery" settings. The idea behind these valves was to limit the air pressure available to the front brakes when driving on slippery surfaces, and thereby reduce the danger of a front-wheel skid. Studies have found that this is not actually a concern, so if your vehicle has a front brake limiting valve, leave it in the "normal" position.
23 . During an applied leakage test, the maximum leakage rate for a single vehicle with air brakes is:
4 psi in one minute.
It is important to know the maximum air loss rate that is safe for your specific vehicle. A single vehicle with air brakes should have a leakage rate no higher than 3 psi in a minute during an applied leakage test.
24 . When operating a vehicle with a dual brake system, a driver should:
Pump the pedal about 20 times to build pressure, then begin driving.
Before driving a vehicle with a dual air system, allow time for the air compressor to build up a minimum pressure of 100 psi in both the primary and secondary systems.
25 . If you are turning left and there are two available left turn lanes, which lane should you choose?
Trucks should not turn where there are two left turn lanes.
A large vehicle may need to swing right to make a left turn. If an intersection has two left turn lanes, the driver should choose the righthand land to begin their turn.
26 . A visual low pressure warning signal should activate before air pressure drops to a level between:
40 and 60 psi.
A visual low pressure warning signal should activate before air pressure drops to a level between 55 and 75 psi. This signal could be a light, a buzzer, or a wig wag.
27 . The two indicators that determine when you should upshift are:
Oil pressure and air brake pressure.
There are two indicators that determine when you need to shift into a higher gear. One indicator is the engine speed (rpm). You should read your vehicle's manual to learn its rpm range and shift up when you reach the top of that range. The other indicator is road speed (mph). You should learn which speeds each gear can accommodate, then keep an eye on the speedometer and shift up as needed.
28 . Who is responsible for inspecting a vehicle's cargo?
The driver
It is a driver's responsibility to inspect their cargo; recognize overloading or poorly balanced weight; know that the cargo is properly secured and not obscuring their view; and know that the cargo does not restrict access to emergency equipment. The driver is always responsible for their cargo, even if they were not the one who initially loaded and secured the cargo.
See the exact questions that will be on the 2026 Texas DMV exam.
99.2% of people who use the cheat sheet pass the FIRST TIME
Lillian MCcranie explains how our CDL study guide was helpful in passing the exam and recommends it to everyone.
Cameron tells us how he purchased the CDL exam, and found it to be a useful tool which helped him pass the exam and find a job.
2026 Texas | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in Texas, you need to have a valid CDL license first. Then, study the Texas CDL handbook's section on Doubles/Triples endorsement. Afterwards, schedule an appointment at your local DMV to take the written test. Upon passing, you'll receive your endorsement. Remember, some employers may require additional on-the-job training.
To obtain a CDL Doubles/Triples license in Texas, you need to have a basic CDL license first. Then, pass the Doubles and Triples Endorsement Test which covers coupling and uncoupling, inspecting doubles and triples, and checking air brakes. Additionally, you must pass a vision test and provide proof of medical fitness.
While Texas doesn't require specific experience for a CDL Doubles/Triples endorsement, it's recommended to have practice handling such large vehicles. A CDL training course can provide this. You must pass a written test on handling double/triple trailers. Knowledge of coupling/uncoupling, inspecting trailers and air brakes is necessary. Professional training can greatly improve your chances of passing the test.
Yes, to obtain a CDL Doubles/Triples endorsement in Texas, you must pass an additional written test. This test covers information specific to driving double and triple trailers such as coupling and uncoupling, inspecting doubles and triples, and the proper procedures for pulling double/triple trailers. No additional road test is required for this endorsement.
The CDL Doubles/Triples endorsement test in Texas is a written exam, not a skills test. It focuses on knowledge such as how to couple and uncouple correctly, inspecting doubles and triples, and checking air brakes. You'll need to understand safe driving techniques for these larger vehicles, but you won't perform actual driving maneuvers during the test.
No, it's not permissible to operate double/triple trailers without a valid CDL Doubles/Triples endorsement in Texas. The endorsement is a legal requirement, demonstrating that the driver has the necessary knowledge and skills to handle such large vehicles safely. Driving without the appropriate endorsement could result in penalties, fines, or even loss of your CDL.
You can add the CDL Doubles/Triples endorsement to your current commercial driver's license. You don't need to initiate a new application for a CDL. However, you must pass the Doubles/Triples knowledge test. Once you pass, the Texas Department of Public Safety will add the endorsement to your existing CDL.
Yes, there are constraints for drivers with a CDL Doubles/Triples endorsement. For instance, these drivers must comply with specific weight and length regulations for their vehicles. They may also face restrictions related to hazardous materials transport. Additionally, they must adhere to hours-of-service rules set by the Federal Motor Carrier Safety Administration to ensure safe driving practices.
In Texas, the maximum legal weight for a semi-truck is 80,000 pounds without an overweight permit. The maximum length for a single trailer is 59 feet, while double trailers can be up to 28.5 feet each, and triple trailers up to 28 feet each. However, triple trailers are not legal on all roads in Texas.
Yes, there are specific safety guidelines for driving double/triple trailers. Drivers must ensure proper coupling and uncoupling of units, maintain safe following distance, and manage high-speed and curve control. They must also be aware of the "crack-the-whip" effect that can occur when changing lanes or turning. Furthermore, drivers must abide by Federal Motor Carrier Safety Administration regulations for hours-of-service.
