What is the maximum independent brake cylinder pressure allowed on a locomotive with single shoe per wheel brake rigging?

The maximum independent brake cylinder pressure allowed on a locomotive with single shoe per wheel brake rigging is accurately set at 72 psi. This standard is established to ensure the effective application of the brakes while also maintaining safety and mechanical integrity.

When the brake system operates at this maximum pressure, it provides sufficient force to ensure that the shoes make proper contact with the wheels, thus enabling effective deceleration and control of the locomotive. Pressures above this limit could risk the potential for malfunction or damage to the braking components, whereas pressures lower than this may not be sufficient to achieve the necessary braking performance. Understanding these limits helps ensure that train crews can operate their equipment effectively and safely while adhering to established standards.