2025 Wisconsin Cdl Air Brakes - Test 1
The following questions are from real Wisconsin 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. Applying the brake pedal causes air pressure to activate an electric switch and:
Turn off the brake lights.
Turn on the low pressure warning light.
Turn on the brake lights.
Turn off the low pressure warning light.
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Key Data
Number of Tests: 18
Number of Question: 44
Passing Score: 20
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