What is the definition of a closed-car?

1 Answers
Harrison
07/29/25 9:34am
"Closed-car" refers to a vehicle that has the shut-off cock on the brake branch pipe closed, allowing ventilation but rendering the brake itself inoperative. Temporary failure of the automatic brake: Due to the nature of the loaded cargo requiring the deactivation of the automatic brake. Depending on the cargo's properties (flammable, explosive), it is necessary to close the automatic brake to prevent the wheel tread and brake shoe from generating high temperatures or sparks during train braking. Reasons for closing the car: Especially on long downhill slopes, prolonged braking can cause the brake shoes to overheat. If the automatic brake is not deactivated, vehicles carrying explosives or goods sensitive to high temperatures may risk ignition or explosion. Therefore, it is essential to deactivate the automatic brake.
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