What is the brake pipe pressure when fully charged on PA4?

The brake pipe pressure when fully charged on PA4 is 110 psi. This specific pressure is crucial for proper operation and performance in railway systems. A fully charged brake pipe at this pressure ensures that the brake system is ready for effective and efficient braking response when needed. The 110 psi level is designed to optimize both safety and control, allowing train engineers to have reliable braking performance, which is essential for maintaining schedules and ensuring passenger safety.

In the context of train operations, the pressure levels are critical as they directly affect the braking force applied to the train. Understanding the specific pressure requirements assists engineers in troubleshooting, maintenance, and operational settings, ensuring that they can manage the train safely and effectively. Always referring to operational manuals or specifications for these details is standard practice for any train engineer to ensure compliance and safety regulations are met.