How should multiple brake pipe reductions be spaced during operation?

Spacing multiple brake pipe reductions at 30 seconds apart is crucial because it allows for effective communication within the braking system and ensures safe operation. This interval provides enough time for air pressure to stabilize and for the system to respond adequately to each reduction.

If the reductions are made too closely together, it can lead to a rapid drop in pressure and may not allow the brakes to activate properly, risking incomplete or inadequate braking response. The 30-second interval is established as a standard practice to ensure that each braking action is processed comprehensively before the next reduction is initiated, promoting safety and operational efficiency. This practice is especially important in maintaining the integrity of the braking system during routine operations where consistent and coordinated braking is necessary.