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for basic general knowledge, class B, test, there are 50 questions
The General Knowledge test is one of the tests you'll need to take in order to get a permit. What other tests you'll needs depends on what class of CDL you're going for, and the nature of the vehicle(s) you'll be operating.
Last time i took the test in ILLINOIS there was 25 question in General knowledge.
You will fail a CDL drug test with ANY detectable amount of THC in your system.
The class of the Commercial Drivers License , A, B or C refers to the weight of the vehicle. When a person gets a CDL, they take the General Knowledge test.
It won't put any points on your licence, but it will put points on your under this new "grading system" which was implemented.
In order to get a Commercial Drivers License (CDL), you must first have a valid drivers license. Then you must pass the CDL test which includes the general knowledge exam and the driving test. You will also have to pass a medical exam and drug screening test. Once you pass all the tests you will have to pay for the actual CDL, which can cost between $25 to $100.
General Knowledge, Combination Vehicles, Air Brakes (if applicable), plus a pretrip and road test
You'll have to take the General Knowledge test, the Air Brakes test (if applicable), and the written test for the passenger endorsement. Additionally, for your road test, you'll be required to road test in a vehicle of the appropriate class and type (it must be a bus), and equipped with air brakes if you're trying to get air brakes on your CDL.
Well, there isn't a single "Class A CDL" test.. the written tests will include General Knowledge, Combination Vehicles, and Air Brakes (if applicable). You can expect about 20 questions per test, plus there'll be the pre-trip test and the actual road test.
There is tipically 5 questions an answers on the air brakes test in texas. Every other test except "genreal knowledge" test has 20 questions an answers. The genreal knowledge test has 50 questions an answers.
If the vehicle requires a CDL in service, it'll require a CDL for the test drive.