Texas CDL Air Brakes Practice Test

Question: 1 / 400

What is the standard air pressure range for most air brake systems?

70 to 90 psi

90 to 120 psi

The standard air pressure range for most air brake systems is typically between 90 to 120 psi. This range is essential for the effective operation of air brakes in commercial vehicles. At this pressure, the brake system can operate efficiently to ensure timely and safe braking.

Having pressure below this range could lead to inadequate braking performance, resulting in longer stopping distances or potential brake failure. On the other hand, exceeding the maximum pressure limit can lead to excessive wear on brake components or even mechanical failures. Therefore, maintaining the air pressure within this standard range is crucial for the reliability and safety of air brake systems.

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120 to 150 psi

150 to 200 psi

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