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Commercial Drivers License Practice Test

Join 18,882 Americans who searched DMV.ORG for commercial insurance rates:

Check out our FREE CDL Practice Test below and see how you do.

Then get further prepared for the written portion of the commercial driver's license test by purchasing a 100-question or 50-question practice tests. These CDL practice tests are created from our bank of CDL practice test questions and are designed to prepare you for the basics. These practices test are useful for those looking to get their chauffeur license, bus drivers, transport and more. Also consider studying the DMV CDL handbook to reference all rules of the road pertaining to commercial drivers.

NOTE: See our CDL endorsements, for study guides on CDL hazmat training, CDL general knowledge, Class A, B and C CDL license endorsement and more.

Free Commercial Drivers License (CDL) Practice Test

1. The purpose of you conducting a pre-trip inspection of your vehicle is:
2. The maximum weight that a tire can carry at a specific tire pressure is called:
3. If your vehicle is equipped with air brakes, you need to know:
4. To help ensure passenger safety, bus drivers should always check to make sure the following are all in working order:
5. When driving down a steep downhill grade, you should:
6. Water is the best way to put out a fire when the fuel is:
7. Drivers should check the exhaust system regularly because:



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