A system for recovery of compressed air released by air suspensions of at least one railway vehicle or train, comprising: - a first compressor arranged to be supplied by atmospheric pressure and to generate compressed air; - a compressed air drying device arranged to be supplied with compressed air provided by said first compressor; - a first pipe arranged to be supplied with compressed air provided by said compressed air drying device; - a first tank arranged to be supplied with compressed air provided by said first pipe; - a non-return valve arranged to be supplied with compressed air provided by said first pipe; - a limiting valve arranged to be supplied with compressed air provided by said non-return valve; - a second tank arranged to be supplied with compressed air provided by said limiting valve; - a second pipe arranged to be supplied with compressed air provided by said second tank; - at least one leveling valve arranged to be supplied with compressed air provided by said second pipe; - at least one pneumatic spring arranged to be supplied with compressed air provided by said leveling valve, wherein the pneumatic spring is arranged to be interposed between a bogie of at least one railway vehicle and a carriage of said at least one railway vehicle, wherein said at least one leveling valve includes a pneumatic discharge port arranged to discharge compressed air accumulated in said pneumatic spring; - a first control device including a first pneumatic inlet connected to said first pipe, wherein said first control device is arranged to activate said first compressor by means of a first control signal when the pressure present in the first pipe is equal to or lower than a predetermined first minimum pressure value, and said first control device is arranged to deactivate said first compressor by means of said first control signal when the pressure present in the first pipe is equal to or greater than a predetermined first maximum pressure value; said system for recovery being characterized in that it comprises: - a third pipe arranged to be connected to said pneumatic discharge port of the at least one leveling valve, so as to receive the compressed air discharged by said pneumatic spring; - a third tank arranged to be connected to said third pipe and to be supplied with compressed air provided by said third pipe. - a first compressor arranged to be supplied by atmospheric pressure and to generate compressed air; - a compressed air drying device arranged to be supplied with compressed air provided by said first compressor; - a first pipe arranged to be supplied with compressed air provided by said compressed air drying device; - a first tank arranged to be supplied with compressed air provided by said first pipe; - a non-return valve arranged to be supplied with compressed air provided by said first pipe; - a limiting valve arranged to be supplied with compressed air provided by said non-return valve; - a second tank arranged to be supplied with compressed air provided by said limiting valve; - a second pipe arranged to be supplied with compressed air provided by said second tank; - at least one leveling valve arranged to be supplied with compressed air provided by said second pipe; - at least one pneumatic spring arranged to be supplied with compressed air provided by said leveling valve, wherein the pneumatic spring is arranged to be interposed between a bogie of at least one railway vehicle and a carriage of said at least one railway vehicle, wherein said at least one leveling valve includes a pneumatic discharge port arranged to discharge compressed air accumulated in said pneumatic spring; - a first control device including a first pneumatic inlet connected to said first pipe, wherein said first control device is arranged to activate said first compressor by means of a first control signal when the pressure present in the first pipe is equal to or lower than a predetermined first minimum pressure value, and said first control device is arranged to deactivate said first compressor by means of said first control signal when the pressure present in the first pipe is equal to or greater than a predetermined first maximum pressure value; - a third pipe arranged to be connected to said pneumatic discharge port of the at least one leveling valve, so as to receive the compressed air discharged by said pneumatic spring; - a third tank arranged to be connected to said third pipe and to be supplied with compressed air provided by said third pipe.