Knowledge Test Class A #1
Class A Driving Test | California 2026 #1
Train for FREE online with our California 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 CA 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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1 . When you double your speed from 20 to 40 mph, your vehicle's stopping distance is:
Doubling your speed from 20 mph to 40 mph multiplies your stopping distance by four. Adjust your driving accordingly.
2 . Front wheel braking works:
Front wheel braking is effective under all road conditions. It is unlikely that you will experience a front wheel skid, even on ice.
3 . When driving a 50-foot truck at 50 mph, your minimum following distance should be:
At speeds below 40 mph, you should allow at least one second of following distance for every 10 feet of your vehicle. When traveling at higher speeds, follow the same formula, then add one additional second to your following distance.
4 . In cold weather, an alcohol evaporator should be checked and filled:
An alcohol evaporator can help prevent ice from building up in an air brake system. In cold weather, the evaporator should be checked and refilled every day.
5 . What tells you how much pressure is in your vehicle's air tanks?
A vehicle that is equipped with air brakes must also be equipped with a supply pressure gauge. This gauge tells the driver how much air pressure is in each of the vehicle's air tanks.
6 . When adjusting your mirrors before a trip:
When properly adjusted, your mirrors should each display some part of your vehicle. Being able to see your own vehicle in your mirrors will give you a point of reference when judging the positions of other objects.
7 . Anti-Lock Braking Systems (ABS):
If equipped, ABS is in addition to a vehicle's normal braking system and does not increase or decrease the braking power of any other system. ABS only activates when a vehicle's wheels are about to lock.
2026 California | Frequently Asked Questions
To secure a CDL Doubles/Triples endorsement in California, you must first possess a valid CDL. Then, you'll need to pass a written knowledge test about pulling double/triple trailers. This test covers topics such as coupling and uncoupling, inspecting doubles and triples, and handling these vehicles. After passing the test, the endorsement will be added to your CDL.
To obtain a CDL Doubles/Triples license in California, you must have a valid Class A CDL. You'll need to pass a written knowledge test specific to double/triple trailers. This test covers topics like coupling and uncoupling, inspecting doubles and triples, and handling. You don't need a special skills test for this endorsement.
While California doesn't require specific training to get a CDL Doubles/Triples endorsement, it's beneficial. Training can help you understand how to safely operate, couple/uncouple, and inspect these vehicles. You'll need to pass a written knowledge test, so studying is essential. Practical experience driving larger vehicles can also be beneficial for handling doubles/triples.
Yes, in California, to obtain a CDL Doubles/Triples endorsement, you must pass a written knowledge test specifically designed for this endorsement. The test covers topics such as safely pulling double/triple trailers, coupling and uncoupling, and inspecting these types of vehicles. This is in addition to the general CDL tests.
The CDL Doubles/Triples endorsement test in California is a written knowledge test, not a skills test. Therefore, you won't need to demonstrate any specific maneuvers. However, the test does cover topics such as coupling and uncoupling, inspecting doubles and triples, and handling these types of vehicles. Understanding these topics will be crucial to passing the test.
No, it's not permissible to operate double/triple trailers without a valid CDL Doubles/Triples endorsement in California. This endorsement is required by law for drivers who wish to operate a vehicle towing two or three trailers. Driving without the appropriate license or endorsement can result in serious penalties, including fines and suspension of your CDL.
You can add the CDL Doubles/Triples endorsement to your existing commercial driver's license. You don't need to initiate a new application for a license. However, you will need to pass the specific written test for the endorsement and pay any associated fees. Remember, the endorsement is added to your CDL, not your regular driver's license.
Yes, there are limitations for drivers with a CDL Doubles/Triples endorsement. They must only drive vehicles that they are licensed for, and must adhere to the maximum weight and length restrictions outlined by California law. Also, they must follow safety regulations such as conducting pre-trip inspections and adhering to hours-of-service rules. Violation of these rules can result in penalties or loss of the endorsement.
The maximum legal weight for any vehicle in California is 80,000 pounds, including double/triple trailers. The maximum legal length for a two-trailer combination is 75 feet, while a three-trailer combination is 65 feet. However, the length of the cargo in the trailer cannot exceed 53 feet. Exceeding these limits may require a special permit and could result in penalties.
Yes, drivers with a CDL Doubles/Triples endorsement must adhere to specific safety guidelines. These include conducting regular pre-trip inspections, securing cargo properly, maintaining safe following distances, and understanding the high rollover risk. Drivers must also comply with hours-of-service regulations to prevent fatigue-related accidents. Violating these safety rules can result in penalties or loss of endorsement.