System for the signaling and management of emergency calls for motorcycles, comprising: - at least a first electronic device associable with a user of a motorcycle and having at least a first detection unit of kinematic data of the motion of the user, a first radio-wave transceiver unit associated at least with said first detection unit and adapted to receive/transmit data, a biometric detection unit adapted to detect the biometric data of said user; - at least a second electronic device fixed to at least a part of said motorcycle, having at least a localization unit for locating the geographical position of said motorcycle, at least a second radio-wave transceiver unit adapted to receive/transmit data, a second detection unit of kinematic data of the motion of said motorcycle, at least a second data processing unit operatively connected to said second detection unit for the reception of the relevant kinematic data; and - at least a remote control station, operatively connected to at least one of said first device and said second device to signal and manage emergency calls; wherein said second device comprises at least a control unit operatively connected to the second data processing unit for the reception of the processed data so as to determine the seriousness of the accident occurred, and wherein the control unit is adapted to control the functionality of said biometric detection unit according to the seriousness of the accident. - at least a first electronic device associable with a user of a motorcycle and having at least a first detection unit of kinematic data of the motion of the user, a first radio-wave transceiver unit associated at least with said first detection unit and adapted to receive/transmit data, a biometric detection unit adapted to detect the biometric data of said user; at least a first detection unit of kinematic data of the motion of the user, a first radio-wave transceiver unit associated at least with said first detection unit and adapted to receive/transmit data, a biometric detection unit adapted to detect the biometric data of said user; - at least a second electronic device fixed to at least a part of said motorcycle, having at least a localization unit for locating the geographical position of said motorcycle, at least a second radio-wave transceiver unit adapted to receive/transmit data, a second detection unit of kinematic data of the motion of said motorcycle, at least a second data processing unit operatively connected to said second detection unit for the reception of the relevant kinematic data; and at least a localization unit for locating the geographical position of said motorcycle, at least a second radio-wave transceiver unit adapted to receive/transmit data, a second detection unit of kinematic data of the motion of said motorcycle, at least a second data processing unit operatively connected to said second detection unit for the reception of the relevant kinematic data; and - at least a remote control station, operatively connected to at least one of said first device and said second device to signal and manage emergency calls; wherein said second device comprises at least a control unit operatively connected to the second data processing unit for the reception of the processed data so as to determine the seriousness of the accident occurred, and wherein the control unit is adapted to control the functionality of said biometric detection unit according to the seriousness of the accident. wherein said second device comprises at least a control unit operatively connected to the second data processing unit for the reception of the processed data so as to determine the seriousness of the accident occurred, and wherein the control unit is adapted to control the functionality of said biometric detection unit according to the seriousness of the accident.