What measurement of brake pedal height is acceptable during the inspection?

During a Maryland State Inspection, one critical aspect evaluated is the brake system's effectiveness, which includes checking the brake pedal height and its stability. The measurement of brake pedal height being stable for 60 seconds is essential because it ensures that the brake system is functioning properly without failing under pressure.

A stable brake pedal means that when pressure is applied, there is no excessive sinking or sponginess, indicating that the hydraulic system is intact and that there are no leaks or component failures, such as a worn brake master cylinder. Stability for this duration allows inspectors to confirm that the brake pedal does not significantly lose height under sustained pressure, which can reveal issues within the braking system that could compromise safety.

While measurements of stability for shorter durations like 30, 45, or 90 seconds might also suggest some level of effectiveness, the specific standard of 60 seconds is established as the benchmark for ensuring that the brake system can consistently hold pressure under normal operating conditions. Having this standard helps in maintaining safety measures for vehicles on the road, emphasizing the critical nature of reliable braking performance.