District Of Columbia CDL Air Brakes Practice Test

To confirm that a trailer has ABS, you can:

Look under the trailer for wheel speed sensors coming from the back of the brakes. Look under the hood for the ABS sticker. Look at the tires. Remove a tire and look for the ABS sensor on the axle.

Correct Answer:

Look under the trailer for wheel speed sensors coming from the back of the brakes.

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