2025 South Dakota Cdl Double - Test 1
The following questions are from real South Dakota 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. Before driving a vehicle with air brakes, you should ensure that the ____ come on automatically when air pressure falls below 45 psi.
Spring brakes
Parking brakes
Air brakes
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Key Data
Number of Tests: 18
Number of Question: 40
Passing Score: 16
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