Texas CDL General Knowledge Practice Exam

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Prepare for your Texas CDL exam with engaging quizzes and comprehensive knowledge assessments. Ensure you are ready for the road and confident in your knowledge, helping you to achieve your commercial driving license with ease.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

During a pre-trip inspection, what should break grease be free of?

Dirt and debris
Oil and gas stains
Water and ice
Oil, grease, or brake fluid

The correct answer is: Oil, grease, or brake fluid

Break grease should be free of oil, grease, or brake fluid because these substances can affect the brake's performance and effectiveness. Dirt and debris can also cause issues, but they are not as harmful as oil, grease, or brake fluid. Oil and gas stains and water and ice should also be avoided, but they are not as critical for the safe operation of the brakes as oil, grease, or brake fluid. Therefore, D is the best and most complete answer.