2025 Louisiana Cdl Combination - Test 1
The following questions are from real Louisiana CDL practice tests. After selecting the answer, you can see the explanation. After confirming, click "Next" to jump to the next question.
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1. Shut-off valves:
Prevent air from escaping air brake systems.
Prevent air from entering air brake systems.
Override vehicles that are out of control.
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Key Data
Number of Tests: 18
Number of Question: 20
Passing Score: 16
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