How can you determine the air pressure at the rear of the train before starting a Transfer Train Movement Air Test?

• A. Ensure rear is at 75 psi with accurate gauge valid within last 92 days; DPU EOT
• B. Read the locomotive air pressure gauge
• C. Use a handheld gauge at the caboose
• D. Listen for air in the brake line

Answer: (A)

You determine the rear-end air pressure by reading the gauge on the DPU End Of Train at the rear. Make sure this rear gauge is properly calibrated and current (valid within the last 92 days) and that it shows at least 75 psi. This direct rear-end reading ensures you know the actual brake pipe pressure at the far end of the train before starting the Transfer Train Movement Air Test. Reading the locomotive gauge won’t reflect rear pressure, a handheld gauge may not be the official, current measurement, and listening for air doesn’t provide a concrete pressure value.