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Practice quizzes / California CDL Air Brakes Test Practice Questions - California CDL Air Brakes Knowledge Test Exam / Question 60379
Practice question

At what pressure must the low air pressure warning device activate at the latest?

  1. At 30 psi
  2. Between 55 and 75 psi
  3. At 90 psi
  4. At 120 psi

Answer: B — Between 55 and 75 psi

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: California CDL Air Brakes Test Practice Questions - California CDL Air Brakes Knowledge Test Exam →
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