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All of them - you'd fail, but the question did not say anything about passing the test!
Rule of thumb, about 20 questions per section. How many questions that comes to total depends on your class of CDL and endorsements you're going for. For all classes, you'll have to take General Knowledge. If it's going to be an air brake equipped vehicle, you'll have to take air brakes (and perform your road test in a vehicle so equipped). If you're going for a Class A, you'll have to take Combination Vehicles. Then there's your endorsements... double/triple trailers, hazardous materials, passenger, tanker..
There used to be 100 but it is tough and you only get to take it once with no retests. if you fail you will have to consider another branch of the service so be prepared. You think they let everyone in but that test was so tough it surprised me. STUDY and search the web.
100%. All of the oxygen that I breathe comes from the air! The answer that you were probably after, but did not ask, was about the percentage of oxygen in the air that we breathe. The questions may sound similar but they are not the same. The answer is a little over 20%.
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.
In Wyoming there are 20
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When you got your CDL did you take the road test in a air brake equipped vehicle? If you did not then you have to retest to add air brakes. Not the whole test just the air brake portion both written and pre-trip portion of road test.
There isn't an air brake endorsement. If you haven't completed and passed the written air brakes test at the DMV and conducted your road test in an air brake equipped CMV, then you have a restriction prohibiting you from operating a CMV equipped with air brakes. You take the written test and do the road test in an air brake equipped vehicle.
You take the written Air Brakes test, and conduct your road test in a vehicle equipped with air brakes.
There is no air brake endorsement. If a CDL driver does not complete and pass the written Air Brakes test and perform their road test in an air brake equipped vehicle, they receive a restriction which prohibits them from operating a commercial vehicle with air brakes.
Unfortunately, you must pay for your CDL air brake test. You can visit www.cristcdl.com/otc/ab4/ to read more about it.
There is no air brake endorsement for a CDL, period. If you do not complete the written air brakes test AND do your road test in an air brake equipped vehicle, you receive a restrictionwhich prohibits you from operating a commercial vehicle with air brakes (although it has no impact on air brake equipped vehicles which fall outside the jurisdiction of the FMCSA).
You complete the written air brakes test, and perform your road test in a vehicle equipped with air brakes.
There is no air brake endorsement. If you do not pass the written air brakes test AND complete your road test in a vehicle equipped with air brakes, then you get a restriction which prohibits you from operating an commercial vehicle which is equipped with air brakes. It is possible to have a Class A CDL with an air brake restriction.
All of them - you'd fail, but the question did not say anything about passing the test!