ASE School Bus Technician Brakes Certification (S4) 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What happens if the air system pressure drops below the necessary level?

The brakes will engage automatically

The vehicle will remain stationary

Braking performance may be compromised

When the air system pressure drops below the necessary level, braking performance may be compromised. In air brake systems, the appropriate pressure is crucial for the operation of the brakes. If pressure falls below the required threshold, the brakes may not function effectively, leading to reduced stopping power or delayed response.

This situation can pose significant safety risks, as the vehicle may take longer to stop or not stop at all if the pressure continues to fall. It's essential for bus technicians to monitor and maintain the air pressure in the braking system to ensure optimal performance and safety.

Maintaining proper air pressure is vital, as it ensures that the brake chambers can fully apply the brakes when needed. Anything less than the necessary pressure could lead to unsafe driving conditions.

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The air compressor will shut off

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