Translations:Air Brake System Overview/14/en

Due to leaks , no brake components can remain pressurized indefinitely. It usually takes some time to bring the components of unused vehicles to their nominal, high pressure level, before they can be set in motion. The two biggest factors are the main reservoir, which will charge as quickly as the respective compressor is capable to, and auxiliary reservoirs, which may take a long time to charge, depending on how many vehicles there are in the train.