CDL Practice Tests

Free Iowa CDL Test Questions and Answers

Iowa CDL Testing Information

We provide updated CDL practice tests for classes A, B, and C, commercial driver’s license’s plus endorsements. If you need to find local MVD information, including locations, hours, physical study manuals, or any other local testing information, visit the Iowa Motor Vehicle Division.

Using online practice exams are a proven and effective study method for improving test scores. Pass our general knowledge, air brake, and combination vehicle practice tests with a score of 100%, and you will be ready to test for your Iowa commercial driver's license.


CDL Practice Test (Home) | General Knowledge Test | General Knowledge Test Part 2

True/False General Knowledge Challenge | Hazmat Test | Hazmat True/False Test | Air Brake Test

Air Brake Test (New) | Combination Vehicles Test | Doubles and Triples Test | Tanker Test

Pre-Trip Inspection | Truck Driver Requirements | School Bus Test | Passenger Vehicle Test

Class A CDL Test #1 | Class A CDL Test #2 | Class B CDL Test #1 | Class B CDL Test #2

CDL Learning Series | CDL Training Information

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