What is the standard brake pipe pressure for M-3 trains?

The standard brake pipe pressure for M-3 trains is indeed within the range of 130-150 PSI. This pressure range is critical for the effective functioning of air brake systems on these trains, ensuring proper braking performance and safety. Maintaining the correct brake pipe pressure is vital because it allows the brakes to engage and release properly based on the commands given by the engineer. The air brake system relies on this pressure to transmit signals and control the train's speed, especially during operations like stopping or slowing down.

When the pressure is within this specified range, it helps optimize the overall braking response and minimizes the risk of brake failure due to inadequate pressure. This knowledge is essential for operators and maintenance personnel to ensure that the air brake system operates efficiently and safely, contributing to the reliable operation of the M-3 trains.