What problem can wet brakes cause?
Correct answer: D – Weak, uneven, or grabbing brake action
Water in the brakes can make them weak, uneven, or prone to grabbing. The result may be reduced braking power, wheel lockup, pulling to one side, or a trailer jackknife. After passing through unavoidable deep water, dry the brakes as directed and make a test stop when it is safe.
Source: Maryland Commercial Driver License Manual — § 2.13.2, “Wet Brakes”

