2025 Oklahoma Cdl Combination - Test 1
The following questions are from real Oklahoma 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. To find out if a vehicle that was built before 1998 has an Anti-Lock Braking System (ABS), you can:
Pump the air brakes to activate the ABS.
Look into the back of the fifth wheel.
Check for wheel speed sensors coming from the back of the brakes.
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Key Data
Number of Tests: 18
Number of Question: 20
Passing Score: 16
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